By Steve Holland

WASHINGTON (Reuters) – U.S. President Donald Trump was set to give Israeli Prime Minister Benjamin Netanyahu a boost for his re-election campaign on Monday as Netanyahu’s chief political opponent sought to position himself as a better alternative to lead Israel.

During a White House visit by Netanyahu, Trump was expected to sign a proclamation officially granting U.S. recognition of the Golan Heights as Israeli territory. Israel seized the strategic land from Syria in the 1967 Middle East war.

The recognition, which Trump had announced in a tweet last Thursday, appeared to be the most overt gesture by the Republican president to help Netanyahu, who had been pressing Trump for the move.

The Israeli prime minister, who faces an election on April 9, on Monday cut short his U.S. visit after a rocket fired from Gaza injured seven people near Tel Aviv. He arrived in Washington on Sunday, originally for a four-day visit.

The attack in central Israel came as the American Israel Public Affairs Committee (AIPAC), a pro-Israel group, held its annual meeting in Washington with speaker after speaker expressing U.S. support for strong ties with Israel.

“We stand with Israel because her cause is our cause, her values are our values, and her fight is our fight,” Vice President Mike Pence said on Monday.

Pence also talked tough against Iran, saying that under Trump, “America will never allow Iran to obtain a nuclear weapon.”

Netanyahu’s strongest election challenger, Benny Gantz, appeared before the gathering on Monday, and vowed to protect Israel against threats from Iran and Syria. He called for unity in Israel.

“We must remember if that we want hope, we must have unity,” he said.

With election day approaching, opinion polls put Netanyahu’s right-wing Likud and Gantz’s centrist Blue and White party neck and neck.

(Reporting by Steve Holland; editing by Jonathan Oatis)