The European Union’s (EU) foreign policy chief reported to Al Jazeera that Russia is increasing its military force in Syria to prevent the “imminent” fall of Syrian President Bashar al-Assad’s regime.

The report comes after the EU’s high representative for foreign affairs and security policies, Federica Mogherini, had a conversation with Russian foreign minister, Sergei Lavrov. Lavrov told Mogherini that the military support Russia has provided Syria was to prevent the collapse of the Syrian state.

“His fear is of a complete collapse of the state structures in Syria,” Mogherini said. “This could be one of the reasons Russia is talking in this way, but it could also be willingness to show that Russia is an important, substantial player.”

Most analysts believe that Russia’s increase in military power will end any prospect of Assad being overthrown by rebel forces as well as consolidate the de facto partitioning of Syria. In the recent past, Assad’s military has nearly fallen to rebel advances.

Approximately two thirds of Syria is controlled by mostly Islamist rebels, including Syrian fighters backed by Qatar, Saudi Arabia and Turkey, or the Islamic State, and it doesn’t seem like Russia will be able to retake the territory unless it deploys ground troops.

Russia has stated many times that its military presence in Syria is to fight the Islamic State, but many world leaders, including the United States, are still uncertain. Former U.S. ambassador, Robert Ford, believes Russia’s main goal is to boost Assad.

“Why would you put the air units in Latakia instead of Damascus if you want to fight the Islamic State?” Ford said. “Why do you send anti-aircraft equipment when the Islamic State doesn’t have any air force?

“So it seems to me that this is designed to help Assad first,” Ford added.