MANILA, Philippines — Vice President Sara Duterte urged the Philippine Military Academy's "Talang Dangal" Class of 2026 to "stand firm against all threats to our sovereignty and our liberties."In a video message to the graduates, Duterte said that their graduation is the "culmination of a rigorous journey—one defined by discipline, sacrifice, and an unwavering sense of duty,""As you step out of Fort Del Pilar, your lifelong commitment to the nat…