PUTRAJAYA, Malaysia (AP) — Thailand and Cambodia have agreed to an “unconditional” ceasefire starting at midnight, Malaysian Prime Minister Anwar Ibrahim said Monday, a significant breakthrough to resolve five days of deadly border clashes that have killed dozens and displaced tens of thousands of people.

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.

President Donald Trump is championing himself as an expert in conflict resolution after helping successfully negotiate peace between Thailand and Cambodia. The president boasted about his accomplishment Monday while speaking to reporters in Scotland alongside U.

"The U.S. already flunked the test and that should be a wakeup call," a former senior U.S. State Department official told Newsweek.