KUALA LUMPUR — President Donald J. Trump declared a “momentous day for all of the people of Southeast Asia” as Cambodia and Thailand signed a landmark peace agreement formally ending their years-long border conflict.

Speaking at the 2025 ASEAN Summit in Kuala Lumpur, President Trump credited U.S. diplomacy for brokering the deal, calling it “a triumph of peace and partnership” that could save millions of lives. The accord follows months of negotiations led by U.S. and ASEAN mediators after armed clashes along the Cambodian-Thai border earlier this year left dozens dead and displaced thousands.

“This is a momentous day for all of the people of Southeast Asia as we sign a historic agreement to end the military conflict between Cambodia and Thailand,” Trump said during the signing ceremony, flanked by Prime Minister Hun Manet of Cambodia and Prime Minister Srettha Thavisin of Thailand.

The peace agreement establishes a demilitarized buffer zone, joint economic initiatives, and a regional monitoring mission under ASEAN supervision. Analysts say the accord could mark a turning point for Southeast Asia’s stability, reaffirming U.S. influence in the region amid growing competition from China.

White House officials hailed the signing as a major foreign policy victory, underscoring Trump’s six-day Asia tour focused on trade expansion and security cooperation.

Tags: Trump ASEAN Summit, Cambodia-Thailand Peace Deal, Southeast Asia Diplomacy, U.S. Foreign Policy, ASEAN 2025, Trump Asia Tour, Regional Security, Peace Agreement