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.
ALEPPO, Syria/BEIRUT The Syrian army's advance in Aleppo slowed on Thursday but a victory was still firmly in sight after President Bashar al-Assad vowed that retaking the city would change the course of the six-year-old war. | Video