The updated U.S. travel advisory comes amid concerns over an escalation of a long-standing dispute between the two Southeast Asian neighbors who share a 500-mile land border—largely mapped by France when it ruled Cambodia for 90 years until 1953.

Asean foreign ministers have called for an immediate ceasefire between Thailand and Cambodia, expressing deep concern over the rising death toll

Cambodia wants an "immediate ceasefire" with Thailand, the country's envoy to the United Nations said Friday, after the neighbors traded deadly strikes for a second day. The envoy questioned how Thailand,

Thailand and Cambodia exchanged heavy artillery fire for a second day on Friday as their worst fighting in over a decade intensified and spread to new areas.