Southeast Asian nations plan to use spy planes and drones to stem the movement of militants across their porous borders, defense officials said over the weekend, as concerns rise over the growing clout of Islamic State in the region.
Indonesia, Malaysia and the Philippines said they will launch joint air patrols this month at their shared boundaries in the Sulu Sea, in addition to existing maritime patrols.
Authorities in the region have urged greater cooperation to counter the fallout from a raging battle with Islamic State-linked militants in the southern Philippines, the biggest warning yet that the ultra-radical group is building a base in Southeast Asia.