HELICOPTER gunships blasted Muslim rebel positions in the southern Philippines today after guerillas attacked an army outpost violating a two-year-old ceasefire. Fighting broke out late yesterday when about 100 guerillas of the Muslim separatist Moro Islamic Liberation Front (MILF) attacked soldiers on the outskirts of Mamasapano town in central Mindanao. They used mortars, rocket-propelled grenades and assault rifles, spokesmen for the military and MILF said. Fighting continued throughout the night and into today and two MG520 helicopters were called in to attack MILF positions. Extra troops were also deployed to prevent the rebels from overrunning the outpost, military spokesman Colonel...