Thailand, bound to America by a treaty from 1954, appears so far to have the upper hand against Cambodia after air strikes by American-made F16 fighters. Undaunted, however, the Cambodians, armed with Chinese-made rifles,

Vietnam has expressed concern over rising tensions along the Thailand-Cambodia border and called on both nations to exercise restraint and avoid the use of force.

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