How is Russia Likely to Respond to US Strikes in Syria?

'Russia was warned about the attack in advance.'

Russian President Vladimir Putin gestures as he speaks during a press conference after the Asia-Europe Meeting on October 17, 2014 in Milan

Russia has long been threatening the US with "serious consequences" to its missile strikes against the Syrian regime over the alleged chemical attacks in the rebel-held town of Douma. Speaking after the US air raid on Saturday, Anatoly Antonov, the Russian ambassador to Washington, reiterated that "such actions will not be left without consequences".

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