The Syrian military reportedly has started using new air and ground weapons supplied by Russia as part of a boost in support for Syrian leader Bashar Assad that has alarmed U.S. officials. Reuters, citing an unnamed Syrian military source, reported Thursday the Syrian army had been training to use the weapons in the last few months and was just now starting to deploy them. However, the source didn’t specify what type of new weapons Syria was using.

“The weapons are highly effective and very accurate, and hit targets precisely,” the source told Reuters. “We can say they are all types of weapons, be it air or ground.” Syrian Foreign Minister Walid al-Moallem said Thursday that Russia had provided weapons and trained Syrian troops in how to use them. He said the Assad government would be willing to ask Russian troops to fight alongside Syria as it battles the Islamic State group (ISIS). FULL REPORT