Only a Religious Take Over will cease this conflict.
Evangelization, and continued Christianization of Mindanao will produce peace in Mindanao.
Christian Philippines is naturally peaceful. The Mohameddanic Malays have always been violent. Even the Spaniards noted their brutality in their books in the 16th century.
Mohameddanic Malays enslaved many Visayans, selling them as slaves in Sulu and to Borneo.
Spain should have continued its conquest to down to Borneo and All of Malaya.
Spain should have CHRISTIANIZED all of the Malay Archipelago.
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