Topic: Sulu Archipelago
Both the government and Muslim leaders trumpeted the deal, but doubts remain over whether powerful Muslim clan leaders will be willing to lay down their arms as promised.
Recent flyovers by Chinese aircraft in the disputed Spratly Islands off the coast of the Philippines are raising concerns about China's expansionism.
Wednesday's firefight was the bloodiest battle involving the Abu Sayyaf in at least two years. It also raises questions about the effectiveness of US support to Filipino troops.
The Islamist group is holding three Red Cross workers hostage on a southern island.