A Free Syrian Army fighter fires his weapon during clashes with Syrian troops near Idlib, Syria, on Friday. The U.N. said Saturday it is suspending its mission in Syria because of escalating violence.
A frame grab from a video taken by U.N. observers as smoke rose over the Syrian city of Homs earlier this week. The observers said Homs had been shelled by Syrian government forces.
U.N. Supervision Mission in Syria