Syria violence endangers Annan's ceasefire deadline

BEIRUT (Reuters) - Syrian troops bombarded two restive cities on Tuesday, pursuing an assault on President Bashar al-Assad's foes instead of halting the use of big guns and leaving towns as promised under an international peace plan that now looks in peril. The opposition Syrian Observatory for Human Rights reported heavy shelling in the Khalidiya area of Homs and said rebels had killed six