Firing from helicopters marks `` a very serious escalation , '' U.N.-Arab League says . Syrian National Council envoy seeks protection of civilians , access for U.N.-Arab League observers . The opposition al Qaeda shakes up its leadership . The Jordanian regime blames an al Qaeda -linked group for deadly attacks in Damascus .
Firing from helicopters marks `` a very serious escalation , '' Nuland says . U.N.-Arab League envoy seeks protection of civilians , access for U.N. observers . The opposition Syrian National Council shakes up its leadership . The Syrian regime blames an al Qaeda-linked group for deadly attacks in Damascus .