(Times of Israel) U.S. officials say they have been warned by Israel over the impending sale of an advanced Russian missile system to Syria, fearing it could hamper efforts for international intervention in the war-torn country.

Israel suspects that Russia plans to sell Damascus six S-300 missile batteries, as well as 144 missiles, the Wall Street Journal reported Thursday.

The long-range ballistic system, which can down both fighter planes and intercept cruise missiles, would represent a significant upgrade for Syria’s already formidable air defenses.

Note: Read our discussion guidelines before commenting.