Almost a year back I wrote this...

MNLF factions have expressed displeasure, less with the agreement than with their exclusion from the negotiating process.
Last month Nur Misuari, the leader of one such faction "declared independence", and claimed a new republic consisting of Mindanao, Palawan, the Sulu archipelago, and Sabah and Sarawak.

http://www.abs-cbnnews.com/nation/re...s-independence

Misuari doesn't have the influence he had back in the 90s, and has been one of those most notably peeved at being left out of the peace agreement with the MILF. The declaration was not taken terrible seriously.

This week, an MNLF force believed to be loyal to Misuari attacked Zamboanga. The situation remains ongoing, several districts of the city are effectively occupied, hostages have been taken. Today there were reports of fighting very close to City Hall. The initial goal was allegedlyu to hoist the MNLF flag at City Hall.

It's a considerable escalation, as Zamboanga has long been fairly peaceful. Hard to know where it will go. The number of sub-leaders loyal to Misuari and the number of troops they control is not accurately known; estimates vary widely. I've read figures from under 1000 to 4000, don't think anyone really knows. These figure can change rapidly as local leader shift alliances.

It's widely suspected in Manila that the whole thing is an effort to distract from a huge ongoing corruption scandal involving major political figures; there may or may not be something to that. It does illustrate the difficulty of negotiating peace, and the number of potential spoiler groups involved.

Reportage on the Zamboanga situation:

http://www.philstar.com/nation/2013/...k-its-villages

http://newsinfo.inquirer.net/484401/...-leaves-6-dead

http://www.abs-cbnnews.com/nation/re...anga-city-hall