Thailand said while it was grateful to the U.S. president, it could not begin talks while Cambodia was targeting its civilians, a claim that Phnom Penh has denied.

Thai and Cambodian leaders are meeting in Malaysia in an urgent effort to resolve deadly border clashes that entered a fifth day despite mounting international calls for peace.

Border communities in Thailand and Cambodia bore the brunt of the five-day conflict between the neighbours - the heaviest fighting between them in over a decade - before it was halted by a ceasefire ...