A senior Kremlin official said Moscow is "not yet" discussing the delivery of the advanced air-defense system in the wake of the U.S. decision. Last month, Russian officials threatened to fulfill the 2010 contract for the S-300 missiles as a way to deter potential outside military intervention in the two-year-old Syrian civil war. Western powers and Israel have staunchly opposed the sale of the system.
Both Moscow and the U.S. are pushing the warring sides in Syria to enter peace talks in the coming months. But opposition forces have appealed for more weapons and support in recent weeks as they've lost ground against Mr. Assad's troops and their allies from the Iranian-backed Hezbollah group. The Kremlin opposes any international action against its longtime client, Mr. Assad, and has been skeptical of past Western claims that his forces were using chemical weapons. Read more >>