At Asean summit in KL, Trump hosts Thailand & Cambodia's 'Peace Accord' signing, claiming he ended their border beef from his Scottish golf course! Leaders Hun Manet & Anutin ink deal: weapons pullback, landmine clears, scam busts. But it's no full fix—dispute simmers. Cambodia eyes Nobel for Trump; Thailand calls it a 'pathway.' 'Monumental step!' Trump boasts. Amid US tariff talks, SE Asia cheers stability.