"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 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 has rejected mediation efforts from third countries to end the ongoing conflict with Cambodia, insisting that Phnom Penh cease attacks and resolve the situation only through bilateral talks,

Thailand is a major non-NATO ally of the U.S., while Cambodia is one of China's closest regional allies. The two countries began fighting after a recent dispute over landmines erupted into exchanges of fire on Thursday, July 24, with each side accusing the other of initiating the current hostilities.

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.

As the Cambodia-Thailand border conflict enters its fourth day, monks, dancers, and civilians offer shelter, food, and aid to those over 168,000 people displaced.