The leaders of Cambodia and Thailand have agreed to meet to negotiate a ceasefire, according to a social media post by United States President Donald Trump on Saturday.

Thailand and Cambodia clashed for a fourth day on Sunday, despite US President Donald Trump warning them they are risking potential trade deals with the US. The US president said on Saturday the leaders of the two countries had agreed to meet to negotiate a ceasefire.

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

The latest flare-up started on Thursday, with intense fighting spreading across multiple border areas. Early Saturday, Thailand’s navy joined the army in repelling what it described as incursions by Cambodian troops at three points in eastern Trat province.

From Trump’s tariff-fueled ceasefire push in Southeast Asia to political deadlock in Taiwan, a deadly courthouse siege in Iran, and the massacre of Christians in Nigeria’s Plateau State, the world feels like it’s teetering on a knife’s edge—and the blade’s getting sharper.

Tensions have bubbled between the two neighbors for months, flaring on Thursday as Cambodia and Thailand exchanged fire.

Thailand bombed Cambodia with F-16 fighter jets on Thursday, as relations between the two countries imploded following clashes on a disputed border near the Emerald Triangle.

Thailand and Cambodia traded accusations of fresh attacks Saturday as deadly border clashes entered a third day and President Donald Trump joined a chorus of international voices calling for a ceasefire.