link:http://www.independent.co.uk/news/world/middle-east/russia-shoot-down-all-flying-objects-in-syria-us-regime-warplane-isis-terror-a7797101.html
“…Russia has said it will treat US warplanes operating in parts of Syria where its air forces are also present as “targets” amid a diplomatic row caused by the downing of a Syrian jet.
The country’s defence ministry said it would track US-led coalition aircraft with missile systems and military aircraft, but stopped short of saying it would shoot them down.
A hotline set up between Russia and the US to prevent mid-air collisions will also be suspended….”