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

Serious armed clashes have erupted between Thailand and Cambodia over a disputed border area. The fighting, which erupted on Thursday, included gunfire exchanges and shelling and rocket fire, which Th

SISAKET, Thailand/WASHINGTON, July 26 (Reuters) - U.S. President Donald Trump said on Saturday that the leaders of Cambodia and Thailand had agreed to meet immediately to quickly work out a ceasefire, as he sought to broker peace after three days of fighting along their border.

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.

China has dismissed allegations that it was supplying weapons to Cambodia amid its ongoing border conflict with Thailand that has led to at least 33 people dying and hundreds of thousands displaced.

Thailand and Cambodia exchanged heavy artillery fire for a second day on Friday as border fighting intensified and spread, while Cambodia's leader said Thailand had agreed to a Malaysian ceasefire proposal but then backed down.

SISAKET, Thailand (Reuters) -When the Thai and Cambodian armies began shelling at their contested border on Thursday, Komsan Prachan thought his family was far enough away from the fighting to be safe.