"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 warned its conflict with neighboring Cambodia could “potentially develop into a war” as troops used rockets and artillery to shell targets along their contested border for a second

Thailand and Cambodia have agreed to an immediate and unconditional ceasefire in an effort to resolve deadly border clashes. The talks between Thailand's Prime Minister Phumtham Wechayachai and Cambodian Prime Minister Hun Manet were held at Malaysian Prime Minister's official residence in Malaysia's administrative capital, Putrajaya.