MANILA, Philippines — About 14,000 American and Filipino forces will take part in battle-readiness exercises in the Philippines, including live-fire drills, in a large-scale deployment that shows the Trump administration is not scaling back its commitment to help deter aggression in the region, a senior Philippine military official said Tuesday. The annual joint Balikatan — Tagalog for “shoulder-to-shoulder” — exercises between the longtime allies will be held from April 21 to May 9 and involve