Tag Archives: ICBM

North Korea engine test may be prelude to partial ICBM flight

North Korean leader Kim Jong Un watched the ground jet test of a Korean-style high-thrust engine newly developed by the Academy of the National Defence Science in this undated picture provided by KCNA in Pyongyang on March 19, 2017.

By Ju-min Park

SEOUL (Reuters) – North Korea has likely mastered the technology to power the different stages of an intercontinental ballistic missile (ICBM) and may show it off soon, analysts say, but it is likely still a long way from being able to hit the mainland United States.

North Korean state media announced its latest rocket-engine test on Sunday, saying it would help North Korea achieve world-class satellite-launch capability, indicating a new type of rocket engine that could be compatible with an ICBM.

The test showed “meaningful” progress, a spokesman for South Korea’s Defence Ministry said on Monday, with the firing of a main engine and four auxiliary engines as part of the development of a new rocket booster.

Pentagon spokesman Captain Jeff Davis declined to give a specific assessment of the test but said it was “consistent with the pattern we’ve seen by North Korea to continue to develop their ballistic missile program.”

The North Korean announcement came as U.S. Secretary of State Rex Tillerson was in Beijing at the end of his first visit to Asia for talks dominated by concern about North Korea’s nuclear and missile programs.

South Korean Defense Ministry spokesman Lee Jin-woo said the test showed progress in engine function, but added that further analysis was needed to show the exact thrust produced and possible uses for the engine.

North Korea’s state media released pictures of the high-thrust engine test overseen by leader Kim Jong Un, and said he had called it “a new birth” of the country’s rocket industry.

Experts say space rockets and long-range missiles involve fundamentally identical technologies, but with different configurations for trajectory and velocity for the stages.

MOTOR FOR ICBM?

Kim Dong-yub of Seoul’s Institute for Far Eastern Studies said he believed North Korea had carried out “a comprehensive test for the first-stage rocket for an ICBM.”

“It appears that North Korea has worked out much of its development of the first-stage rocket booster,” he said.

Joshua Pollack, of Washington’s Nonproliferation Review, said four steering nozzles had also been seen in older, long-range rockets North Korea used to launch objects into space in 2012 and 2016. But he said the main engine was quite different from anything seen previously and appeared roughly the right diameter to serve as either the first or second stage of an ICBM.

U.S. aerospace expert John Schilling, a contributor to the 38 North North Korea monitoring website, said the motor appeared too big for any ICBM North Korea has been known to be working on, but would be a good fit for the second stage of a new space rocket it is planning – or for a yet-unknown ICBM design.

Kim said North Korea had not yet mastered the re-entry technology needed for an ICBM, so still had work to do before it was able to hit the United States. It might though soon be able to demonstrate that it had perfected an ICBM system’s booster rocket stage.

“What could be next is they would make a new type of ICBM with this new engine system and launch it, but not the entire stages, but to make only the first stage, fly about 400 km and drop. They are not going to show it all at once.”

A U.S. administration official declined to give a specific technical assessment of the test but said it showed North Korea was “150 percent” committed to its weapons programs.

“This is one more indication that they are going to act in a way that is counterproductive,” he said.

North Korea has conducted five nuclear tests and a series of missile launches in defiance of U.N. resolutions, and experts and Western officials believe it is working to develop nuclear-tipped missiles that can reach the United States.

North Korean leader Kim Jong Un said this year the country was close to test-launching an ICBM, prompting U.S. President Donald Trump to tweet: “It won’t happen!”

Last week, Tillerson issued the Trump administration’s starkest warning yet to North Korea, saying a military response would be “on the table” if it took action to threaten South Korean and U.S. forces.

Trump told reporters on Sunday he held meetings on North Korea over the weekend and said Kim was “acting very, very badly.”

China said on Monday the situation with North Korea was at a new crossroads with two scenarios – a deterioration to war or a diplomatic solution.

“Any chance for dialogue must be seized, as long as there’s hope,” Foreign Minister Wang Yi said in Beijing.

(Additional reporting by James Pearson in Seoul and David Brunnstrom, Matt Spetalnick and Idrees Ali in Washington; Editing by Jack Kim and James Dalgleish)

New nuclear-capable missile test a success, North Korea says

Passengers watch a TV screen broadcasting a news report on North Korea firing a ballistic missile into the sea off its east coast, at a railway station in Seoul, South Korea

By Ju-min Park

SEOUL (Reuters) – North Korea said on Monday it had successfully test-fired a new type of medium- to long-range ballistic missile the previous day, claiming advances in a weapons programme it is pursuing in violation of U.N. resolutions.

North Korea fired the missile on a high arc into the sea early on Sunday, the first probe of U.S. President Donald Trump’s vow to get tough on an isolated regime that tested nuclear devices and ballistic missiles last year at an unprecedented rate.

The North’s state-run KCNA news agency said leader Kim Jong Un supervised the test of the Pukguksong-2, a new type of strategic weapon capable of carrying a nuclear warhead.

The United States, Japan and South Korea requested urgent U.N. Security Council consultations on the test, with a meeting expected later on Monday, an official in the U.S. mission to the United Nations said.

Japan said further sanctions against North Korea could be discussed at the United Nations, and called on China to take a “constructive” role in responding.

China is North Korea’s main ally and trading partner but is irritated by its repeated aggressive actions, although it rejects suggestions from the United States and others that it could be doing more to rein in its neighbour.

“We have asked China via various levels to take constructive actions as a permanent member of the U.N. Security Council and we will continue to work on it,” said Japan’s Chief Cabinet Secretary Yoshihide Suga.

China said it opposed North Korean missile tests that run contrary to U.N. resolutions.

“All sides should exercise restraint and jointly maintain regional peace and security,” Chinese Foreign Ministry spokesman Geng Shuang told a regular briefing, adding that China would participate in talks at the United Nations on the launch with a “responsible and constructive attitude”.

Russia’s foreign ministry expressed concern over the launch, RIA news agency quoted the ministry as saying.

HIGH ANGLE

North Korea has conducted five nuclear tests, including two last year, although its claims to be able to miniaturise a nuclear weapon to be mounted on a missile have never been verified independently.

Leader Kim said in his New Year speech the North was close to test-launching an intercontinental ballistic missile (ICBM) and state media have said such a launch could come at any time.

A fully developed ICBM could threaten the continental United States, which is about 9,000 km (5,500 miles) from North Korea.

The KCNA news agency said the missile fired on Sunday was launched at a high angle in consideration of the safety of neighbouring countries. A South Korean military source said on Sunday it reached an altitude of 550 km (340 miles).

It flew about 500 km towards Japan, landing off the east coast of the Korean peninsula.

The missile was propelled by a solid fuel engine and was an upgraded, extended-range version of its submarine-launched ballistic missile that was tested successfully last August, according to KCNA.

The missile’s name – Pukguksong-2 – translates as north star or Polaris, the same name of the first U.S. submarine-launched missile.

South Korea’s military said the missile had been launched using a “cold-eject” system, whereby it is initially lifted by compressed gas before flying under the power of its rocket, a system used for submarine-launched missiles.

North Korea’s pursuit of large solid-fuelled missiles was “a very concerning development”, said Jonathan McDowell of the Harvard Smithsonian Center for Astrophysics.

“Large solid-fuel motors are difficult to make work correctly so this is indeed a significant advance by North Korea,” McDowell said.

‘INTOLERABLE’

In addition to launching more quickly, solid-fuel engines also boost the power and range of ballistic rockets.

“Solid-motor engines mean that the fuel is pre-stored and the missile can be launched quickly. For example, rolled out of a cave, tunnel, or bridge,” said Melissa Hanham, a senior research associate at the U.S.-based Middlebury Institute of International Studies at Monterey, California.

“They are also more difficult to track by satellite because they have fewer support vehicles in their entourage.”

The North’s Rodong Sinmun newspaper showed pictures of a missile fired from a mobile launch vehicle, with a flame appearing only after it had risen clear of the vehicle.

Before Sunday, the North’s two most recent missile tests were in October. Both were of intermediate-range Musudan missiles and both failed, according to U.S. and South Korean officials.

A U.S. official said at the weekend the Trump administration had been expecting a North Korean “provocation” soon after taking office.

The latest test came a day after Trump held a summit meeting with Japanese Prime Minister Shinzo Abe, and also followed a phone call last week between trump and Chinese President Xi Jinping.

Abe described the test as “absolutely intolerable”.

In brief comments made while standing beside Abe in Florida, Trump said: “I just want everybody to understand, and fully know, that the United States of America is behind Japan, our great ally, 100 percent.”

Trump and his aides are likely to weigh a series of responses, including new U.S. sanctions to tighten financial controls, an increase in naval and air assets in and around the Korean peninsula, and accelerated installation of new missile defence systems in South Korea, the administration official said.

However, the official said that, given that the missile was believed not to have been an ICBM, and the North had not carried out a new nuclear explosion, any response would seek to avoid increasing tension.

(Additional reporting by Tony Munroe and Christine Kim in SEOUL, David Lawder in WASHINGTON, Kaori Kaneko in TOKYO and Ben Blanchard in BEIJING; Editing by Lincoln Feast and Robert Birsel)

North Korea may test-launch intercontinental ballistic missile soon

A North Korean flag flies on a mast at the Permanent Mission of North Korea in Genev

By James Pearson

SEOUL (Reuters) – North Korea may be preparing to test-launch a new, upgraded prototype of an intercontinental ballistic missile (ICBM), South Korean media reported on Thursday, citing military sources.

In his New Year’s speech, leader Kim Jong Un said North Korea was close to test launching an ICBM, and state media has said a launch could come at any time. Experts on the isolated and nuclear capable country’s missile program believe the claims to be credible.

That test launch could be imminent, and potentially coincide with the inauguration of U.S. President-elect Donald Trump on Friday, South Korean media said.

South Korean intelligence agencies reported on Wednesday that they had recently spotted missile parts being transported, believed to be the lower-half of an ICBM, raising fears that a test-launch may be imminent, the Chosun Ilbo newspaper said, citing unidentified military sources.

“It was different from a conventional Musudan missile in its length and shape,” the source told the Chosun Ilbo, referring to the Musudan intermediate-range missile tested by North Korea last year.

“It is possible they were moving it somewhere for assembly,” the source said.

A spokesman for South Korea’s Office of the Joint Chiefs of Staff, Roh Jae-cheon, told a regular news briefing that while the reports could not be confirmed, the military was monitoring North Korea’s ICBM development.

North Korea has in the past paraded mockups of a road-mobile missile believed to be an ICBM design dubbed the KN-08 by outside observers. It is also believed to have an upgraded version, the KN-14.

A new engine for an intercontinental ballistic missile (ICBM) is tested at a test site at Sohae Space Center in Cholsan County, North Pyongan province in North Korea in this undated photo

A new engine for an intercontinental ballistic missile (ICBM) is tested at a test site at Sohae Space Center in Cholsan County, North Pyongan province in North Korea in this undated photo released April 9, 2016. KCNA/via REUTERS

A road-mobile ICBM, which could be kept hidden or moving until fired, would make tracking and stopping a North Korean missile launch significantly more difficult.

The suspected ICBM is made up of two parts under 15 meters (49 feet) long and is shorter than the KN-08 and KN-14, the Yonhap News Agency said, citing unidentified military sources.

“I don’t recognize the missiles from this description,” said Joshua Pollack, editor of the U.S.-based Nonproliferation Review. “But as we saw in 2016, there’s certainly a variety of active missile programs underway in North Korea”.

“It’s also possible that they are simply conducting field exercises with no plans to launch, or the option to launch if decided,” said Pollack.

Last year, North Korea conducted a test of an ICBM engine made up of a cluster of smaller rockets, indicating it was working on an ICBM design.

Separately, the Washington-based think tank 38 North said on Thursday that operations at North Korea’s Yongbyon nuclear facility may have restarted. North Korea is believed to be able to reprocess plutonium at Yongbyon used in its nuclear warheads.

(Additional reporting by Jeong Eun Lee; Editing by Michael Perry)

U.S. deploys high-tech radar amid heightened North Korea rhetoric: official

radar to spy on North Korea

WASHINGTON (Reuters) – A high-tech sea-based U.S. military radar has left Hawaii to monitor for potential North Korean intercontinental ballistic missile test launches, a U.S. defense official said on Wednesday.

Earlier this month, North Korean leader Kim Jong Un said that the isolated, nuclear-capable country was close to test-launching an intercontinental ballistic missile (ICBM).

The official, speaking on condition of anonymity, said the radar, known as the Sea-based X-band radar (SBX), left on Monday and would reach its destination, about 2,000 miles (3,218 km) northwest of Hawaii, towards the end of January.

The radar is able to track ICBMs and differentiate between hostile missiles and those that are not a threat.

On Tuesday, U.S. Defense Secretary Ash Carter said the U.S. military might monitor a North Korean intercontinental ballistic missile test and gather intelligence rather than destroy it, as long as the launch did not pose a threat.

“If the missile is threatening, it will be intercepted. If it’s not threatening, we won’t necessarily do so,” Carter said,

“Because it may be more to our advantage to, first of all, save our interceptor inventory, and, second, to gather intelligence from the flight, rather than do that (intercept the ICBM) when it’s not threatening.”

Carter’s remarks came just over a week after U.S. President-elect Donald Trump vowed that North Korea would never fulfill its threat to test an ICBM. Trump said in a Jan. 2 tweet: “It won’t happen!”

“The SBX’s current deployment is not based on any credible threat; however, we cannot discuss specifics for this particular mission while it is underway,” Commander Gary Ross, a Pentagon spokesman, said.

(Reporting by Idrees Ali and Phil Stewart; Editing by James Dalgleish)

North Korea’s Intercontinental ballistic missile is plausible, could reach U.S.

A new engine for an intercontinental ballistic missile (ICBM) is tested at a test site at Sohae Space Center in Cholsan County, North Pyongan province in North Korea in this undated photo released by North Korea's Korean Central News Agency

By James Pearson

SEOUL (Reuters) – North Korea has been working through 2016 on developing components for an intercontinental ballistic missile (ICBM), making the isolated nation’s claim that it was close to a test-launch plausible, international weapons experts said on Monday.

North Korea has been testing rocket engines and heat-shields for an ICBM while developing the technology to guide a missile after re-entry into the atmosphere following a lift-off, the experts said.

While Pyongyang is close to a test, it is likely to take  some years to perfect the weapon.

Once fully developed, a North Korean ICBM could threaten the continental United States, which is around 9,000 km (5,500 miles) from the North. ICBMs have a minimum range of about 5,500 km (3,400 miles), but some are designed to travel 10,000 km (6,200 miles) or further.

North Korea’s state media regularly threatens the United States with a nuclear strike, but before 2016 Pyongyang had been assumed to be a long way from being capable of doing so.

“The bottom line is Pyongyang is much further along in their missile development than most people realize,” said Melissa Hanham, a senior research associate at the U.S.-based Middlebury Institute of International Studies at Monterey, California.

She said the North’s test in April of a large liquid-fuel engine that could propel an ICBM was a major development.

“The liquid engine test was astounding,” Hanham said.

“For years, we knew that North Korea had a Soviet R-27 missile engine design. They re-engineered the design of that engine to double its propulsion”.

North Korea has said it is capable of mounting a nuclear warhead on a ballistic missile but it claims to be able to miniaturize a nuclear device have never been independently verified.

The isolated nation has achieved this progress despite U.N. Security Council imposed sanctions for its nuclear tests and long-range rocket launches dating back to 2006. The sanctions ban arms trade and money flows that can fund the country’s arms program.

North Korea has enough uranium for six bombs a year and much of what it needs for its nuclear and missile programs relies on Soviet-era design and technology. Labor is virtually free.

It can produce much of its missile parts domestically and invested heavily in its missile development infrastructure last year, funded by small arms sales and by taxing wealthy traders in its unofficial market economy.

PROPAGANDA OFFENSIVE

Throughout the year, North Korean state media showed images of numerous missile component tests, some of which revealed close-up details of engines and heat shields designed to protect a rocket upon re-entry into the earth’s atmosphere.

The propaganda offensive may have revealed some military secrets, but it may have also been a bid to silence outside analysts, many of whom had remained skeptical of the North’s missile program.

“They’re answering the public criticisms of U.S. experts,” said Joshua Pollack, editor of the U.S.-based Non proliferation Review. “A lot of people had questioned whether they had a working ICBM-class heat shield”.

“So they showed us”.

Despite the research, Pyongyang has experienced considerable difficulties getting its intermediate-range Musudan missile, designed to fly about 3,000 km (1,860 miles), off the ground. It succeeded just once in eight attempted launches last year.

North Korea has fired long-range rockets in the past, but has characterized those launches as peaceful and designed to put an object into space.

Still, the South Korean defense ministry believes the three-stage Kwangmyongsong rocket used by Pyongyang to put a satellite in space last February already has a potential range of 12,000 km (7,457 miles), if it were re-engineered.

Doing so would require mastering safer “cold-launch” technology, and perfecting the ability of a rocket to re-enter the earth’s atmosphere without breaking up.

“North Korea is working hard to develop cold-launch technology and atmospheric re-entry but South Korea and the U.S. will have to assess further exactly which level of development they have reached,” South Korean defense ministry official Roh Jae-cheon told a briefing on Monday.

North Korea began stepping up its missile development in March 2016, Roh said, but added that there were no “unusual signs” related to test preparations, according to the South Korean military.

That same month, Kim Jong Un was photographed looking at a small, ball-like object that North Korean state news agency KCNA said was a miniaturized nuclear warhead – the device North Korea would need to fulfill its ICBM threat.

“2016 marked the year North Korea truly ramped up their WMD (Weapons of Mass Destruction) program,” Hanham at the Middlebury Institute of International Studies at Monterey said.

“I think we’re going to see a (ICBM) flight test in 2017”.

(Additional reporting by Jeongeun Lee; Editing by Raju Gopalakrishnan)

North Korea may get plutonium from restarted reactor in weeks, U.S. says

WASHINGTON (Reuters) – North Korea, which conducted its fourth nuclear test last month and launched a long-range rocket on Saturday, could begin to recover plutonium from a restarted nuclear reactor within weeks, the director of U.S. National Intelligence said on Tuesday.

James Clapper said that in 2013, following its third nuclear test, North Korea announced its intention to “refurbish and restart” facilities at its Yongbyon nuclear complex, to include the uranium enrichment facility and its graphite-moderated plutonium production reactor shut down in 2007.

“We assess that North Korea has followed through on its announcement by expanding its Yongbyon enrichment facility and restarting the plutonium production reactor,” Clapper said in prepared testimony to the Senate Armed Services Committee.

“We further assess that North Korea has been operating the reactor long enough so that it could begin to recover plutonium from the reactor’s spent fuel within a matter of weeks to months,” he said in his annual Worldwide Threat Assessment.

North Korea has used its graphite-moderated reactor at Yongbyon as a source of plutonium for its atomic bombs. It tested a fourth nuclear device on Jan. 6.

North Korea said in September that Yongbyon was operating and that it was working to improve the “quality and quantity” of weapons which it could use against the United States at “any time.”

Clapper said North Korea’s nuclear weapons and missile programs would “continue to pose a serious threat to U.S. interests and to the security environment in East Asia in 2016.”

He said North Korea had expanded the size and sophistication of its ballistic missile forces and was also “committed to developing a long-range, nuclear-armed missile that is capable of posing a direct threat to the United States.”

Clapper said Pyongyang had publicly displayed a road-mobile intercontinental ballistic missile, or ICBM, on multiple occasions, and the U.S. assessment was that it had taken initial steps toward fielding the system, although it had not been flight-tested.

North Korea said that it launched a satellite into space on Saturday with a long-range rocket. The United States and its allies see the launch as cover for Pyongyang’s development of ballistic missile technology that could be used to deliver a nuclear weapon.

The launch was strongly condemned by the United States, its allies and the United Nations Security Council.

(Reporting by David Brunnstrom; Editing by Jonathan Oatis)

North Korea rocket launch may spur U.S. missile defense buildup in Asia

WASHINGTON (Reuters) – North Korea’s latest rocket launch might kick off a buildup of U.S. missile defense systems in Asia, U.S. officials and missile defense experts said, something that could further strain U.S.-China ties and also hurt relations between Beijing and Seoul.

North Korea says it put a satellite into orbit on Sunday, but the United States and its allies see the launch as cover for Pyongyang’s development of ballistic missile technology that could be used to deliver a nuclear weapon.

Washington sought to reassure its allies South Korea and Japan of its commitment to their defense after the launch, which followed a North Korean nuclear test on Jan. 6.

The United States and South Korea said they would begin formal talks about deploying the sophisticated Terminal High Altitude Area Defense system, or THAAD, to the Korean peninsula “at the earliest possible date.”

South Korea had been reluctant to publicly discuss the possibility due to worries about upsetting China, its biggest trading partner.

Beijing, at odds with the United States over Washington’s reaction to its building of artificial islands in the disputed South China Sea, quickly expressed “deep concern” about a system whose radar could penetrate Chinese territory.

China had made its position clear to Seoul and Washington, the Foreign Ministry said.

“When pursuing its own security, one country should not impair others’ security interests,” spokeswoman Hua Chunying said in a statement.

TIPPING POINT

But the North Korean rocket launch, on top of last month’s nuclear test, could be a “tipping point” for South Korea and win over parts of Seoul’s political establishment that remain wary of such a move, a U.S. official said.

South Korea and the United States said that if THAAD was deployed to South Korea, it would be focused only on North Korea.

An editorial in the Global Times, an influential tabloid published by the ruling Chinese Communist Party’s official People’s Daily newspaper, called that assurance “feeble”.

“It is widely believed by military experts that once THAAD is installed, Chinese missiles will be included as its target of surveillance, which will jeopardize Chinese national security,” it said.

Japan, long concerned about North Korea’s ballistic missile program, has previously said it was considering THAAD to beef up its defenses. The North Korean rocket on Sunday flew over Japan’s southern Okinawa prefecture.

Chief cabinet secretary Yoshihide Suga told reporters on Monday the Defense Ministry had no concrete plan to introduce THAAD, but added the ministry believed new military assets would strengthen the country’s capabilities.

Riki Ellison, founder of the Missile Defense Advocacy Alliance, said the launch would give Japan momentum to deploy THAAD.

Washington moved one of its five THAAD systems to Guam in 2013 following North Korean threats, and is now studying the possibility of converting a Hawaii test site for a land-based version of the shipboard Aegis missile defense system into a combat-ready facility.

EFFECTIVENESS QUESTIONED

Some experts questioned how effective THAAD would be against the type of long-range rocket launched by North Korea and the Pentagon concedes it has yet to be tested against such a device.

THAAD is designed to intercept and destroy ballistic missiles inside or just outside the atmosphere during their final, or terminal, phase of flight. It has so far proven effective against short- and medium-range ballistic missiles.

John Schilling, a contributor to the Washington-based 38 North project that monitors North Korea, said THAAD’s advanced AN/TPY-2 tracking radar built by Raytheon Co could provide an early, precise track on any such missile.

David Wright, co-director of the Global Security Program at the U.S.-based Union of Concerned Scientists, said that while THAAD could not shoot down the type of rocket launched on Sunday its deployment could reassure the South Korean public.

“Much of what missile defense programs are about is reassuring allies and the public,” he said.

SUITABLE SITE IDENTIFIED

One U.S. official said the North Korean launch added urgency to longstanding informal discussions about a possible THAAD deployment to South Korea. “Speed is the priority,” said the official, who asked not to be named ahead of a formal decision.

Renewed missile-defense discussions with the United States could also send a message to Beijing that it needs to do more to rein in North Korea’s ballistic missile and nuclear weapons programs, another U.S. official said.

South Korean officials have already identified a suitable site for the system, but it could also be placed at a U.S. base on the Korean peninsula, Ellison said.

THAAD is a system built by Lockheed Martin Corp that can be transported by air, sea or land. The Pentagon has ordered two more batteries from Lockheed.

One of the four THAAD batteries based at Fort Bliss, Texas, is always ready for deployment overseas, and could be sent to Japan or South Korea within weeks, Ellison said.

Lockheed referred all questions about a possible THAAD deployment to the U.S. military.

(Reporting by Andrea Shalal, David Brunnstrom and Matt Spetalnick in Washington. Additional reporting by Kiyoshi Takenaka and Tim Kelly in Tokyo and Ben Blanchard in Taipei; Editing by Dean Yates and Lincoln Feast)

Japan puts military on alert for possible North Korean missile test

TOKYO (Reuters) – Japan has put its military on alert for a possible North Korean ballistic missile launch after indications it is preparing for a test firing, two people with direct knowledge of the order told Reuters on Friday.

“Increased activity at North Korea’s missile site suggests that there may be a launch in the next few weeks,” said one of the sources, both of whom declined to be identified because they are not authorized to talk to the media.

Tension rose in East Asia this month after North Korea’s fourth nuclear test, this time of what it said was a hydrogen bomb.

A missile test coming so soon after the nuclear test would raise concern that North Korea plans to fit nuclear warheads on its missiles, giving it the capability to launch a strike against rival South Korea, Japan and possibly targets as far away as the U.S. West Coast.

Japan’s Minister of Defense Gen Nakatani has ordered Aegis destroyers that operate in the Sea of Japan to be ready to target any North Korean projectiles heading for Japan, the sources said.

A Defense Ministry spokesman declined to say whether PAC-3 batteries and the Aegis destroyers had been deployed to respond to any threat from North Korea.

Nakatani, asked in a press briefing whether Japan would shoot down any North Korean missile, said: “We will take steps to respond, but I will refrain from revealing specific measures given the nature of the situation.”

The advanced Aegis vessels are able to track multiple targets and are armed with SM-3 missiles designed to destroy incoming warheads in space before they re-enter the atmosphere and fall to there targets.

Japan also has Patriot PAC-3 missile batteries around Tokyo and other sites to provide a last line of defense as warheads near the ground.

Rather than a direct attack, however, Japan is more concerned that debris from a missile test could fall on its territory.

(Writing by Tim Kelly; Editing by Robert Birsel)

U.S. says redesigned missile defense interceptor aces test

WASHINGTON (Reuters) – The U.S. Missile Defense Agency on Thursday said it conducted a successful test of the ground-based U.S. missile defense system managed by Boeing Co aimed at demonstrating the effectiveness of a redesigned “kill vehicle” or warhead built by Raytheon Co.

The test purposely did not include an intercept by a ground-based interceptor launched from Vandenberg Air Force Base in California, but was designed to observe the in-flight performance of the redesigned components and collect data on countermeasures carried by the target, according to statements by the agency and the companies involved.

Raytheon’s exoatmospheric kill vehicle, or EKV, is built to destroy incoming ballistic missiles by colliding them while they are still in space, a concept called “hit to kill.”

Thursday’s test was designed to demonstrate the ability of new “divert thrusters” that were developed by Raytheon to maneuver the warhead after a test failure several years ago.

The test, which involved various elements of the U.S. ballistic missile defense system, took place as U.S. officials said North Korea appeared to be preparing for a possible space launch that could advance its development of intercontinental ballistic missiles.

News of the possible North Korean space launch comes weeks after a fourth nuclear test conducted by Pyongyang on Jan. 6 that has raised concerns worldwide.

MDA said program officials would evaluate the performance of the U.S. missile defense system during Thursday’s test using telemetry and other data gathered during the test.

Raytheon’s EKV has an advanced, multi-color sensor used to detect and discriminate incoming warheads from other objects in space. It has its own propulsion, communications link, discrimination algorithms, guidance and control system and computers to support target selection and intercept.

Riki Ellison, founder of the nonprofit Missile Defense Advocacy Alliance, said the test demonstrated new technology developed to make the EKV more reliable, which in turn would allow the U.S. military to shoot fewer interceptors at each incoming missile threat.

He said the successful test would “provide confidence to our public, reliability to the NORTHCOM (U.S. Northern Command) commander and deterrence against North Korea,” he said.

Ellison urged U.S. officials to add 10 more ground-based interceptors to the California site to provide an additional layer of defense for Hawaii and the western United States.

The U.S. military is already adding 14 interceptors to the 30 already in place, but those missiles will go to the other interceptor site in Alaska.

(Editing by Nick Macfie)