In this photo taken on Thursday, Feb. 7, 2013, Moro National Liberation 

In this photo taken on Thursday, Feb. 7, 2013, Moro National Liberation Front (MNLF) rebels, who signed a peace agreement with the Philippine government in 1996, man a checkpoint at a remote village on the volatile island of Jolo, Sulu province in southern Philippines. After years of fighting the government from hidden jungle bases in the southern Philippines, an Al-Qaida-linked militant group is facing a new adversary: fellow Muslim insurgents who can match their guerrilla battle tactics and are eager to regain their lost stature by fighting the widely-condemned terrorist group. The emerging enmity between the Abu Sayyaf militants and the Moro rebels could bolster a decade-long campaign by the Philippines and Western countries to isolate the al-Qaida offshoot Abu Sayyaf, which remains one of the most dangerous groups in Southeast Asia.(AP Photo/Nickee Butlangan)
Associated Press
In this photo taken on Thursday, Feb. 7, 2013, Moro National Liberation Front (MNLF) rebels, who signed a peace agreement with the Philippine government in 1996, man a checkpoint at a remote village on the volatile island of Jolo, Sulu province in southern Philippines. After years of fighting the government from hidden jungle bases in the southern Philippines, an Al-Qaida-linked militant group is facing a new adversary: fellow Muslim insurgents who can match their guerrilla battle tactics and are eager to regain their lost stature by fighting the widely-condemned terrorist group. The emerging enmity between the Abu Sayyaf militants and the Moro rebels could bolster a decade-long campaign by the Philippines and Western countries to isolate the al-Qaida offshoot Abu Sayyaf, which remains one of the most dangerous groups in Southeast Asia.(AP Photo/Nickee Butlangan)
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