Update: White House says violence is not the answer in Syria but attack on Assad's inner circle shows "window is closing." White House says international community needs to act in a unified way.
White House says it has no information on Syrian leader Bashar al-Assad's whereabouts; White House goes on to say the U.S. is closely monitoring Syria's military facilities and believes its chemical stockpile remains under government control.
ANKARA/MOSCOW Turkey shot down a Russian warplane near the Syrian border on Tuesday, saying the jet had violated its air space, in one of the most serious publicly acknowledged clashes between a NATO member country and Russia for half a century. | Video