A ceasefire between Cambodia and Thailand appears to be holding, hours after it came into effect at midnight local time (1 p.m. ET Monday), following days of clashes across the two countries’ disputed border.

Long-festering tensions over border territory have escalated into armed conflict between Cambodia and Thailand, leading to dozens of deaths on both sides and displacing tens of thousands of people

The declaration from Trump comes after he said over the weekend that he had spoken to the leaders of Cambodia and Thailand, urging a ceasefire, adding the U.S. would not get back