A major armed group in Syria fighting to topple President Bashar al-Assad have said they are no longer committed to the stuttering ceasefire brokered by Kofi Annan. A spokesman for the Free Syrian Army said they were no longer bound by the terms of the UN-backed truce and had resumed attacks on government forces to defend their people. A Syrian opposition watchdog said at least 80 government troops were killed at the weekend. FSA officers met the head of the UN observer mission in Syria, Major General Robert Mood who said he believed foreign personnel, money and weapons were fuelling the violence in what he called a "non-constructive way." In Istanbul, armed opposition groups announced they had united under one umbrella as the Syrian revolutionary front. They claimed to have around 12-thousand fighters on the front line. They said they still accepted the Annan peace plan, but would fight on because the regime killed people after it was supposed to have come into force on April 12. More about: Bashar al-Assad, Ceasefire, Syrian politics, United Nations