According to ABC:
Russia Warns US Not to Intervene in Syria, Threatens to Shoot Down Any Airstrike Attempts
Russia has warned the United States not to intervene militarily in Syria against forces loyal to President Bashar al-Assad, threatening that it may shoot down any aircraft attempting to launch strikes.
In a bluntly worded statement, a spokesman for Russia’s defense ministry warned that Russia and the Syrian government had deployed sufficient air defenses to block any potential attacks.
It follows rumbling in Washington that the White House may be considering launching limited strikes against some Syrian regime military targets as an alternative option for moving forward in the Syrian conflict after the collapse of U.S.-Russian cease-fire negotiations.-more