Cambodia’s powerful former leader Hun Sen and Thailand’s prime minister have made separate visits to border areas.

The deterioration of relations was sparked by brief armed clashes in a border area late last month that left one Cambodian soldier dead. What followed were a series of tit-for-tat measures by both countries including troops mobilisations,

The reescalation of conflict was sparked on May 28, when a Cambodian soldier was killed in an early morning clash between both nations’ troops, in an area called the Emerald Triangle—the shared border between Thailand, Cambodia, and Laos. The area remains disputed as both Thailand and Cambodia lay claims to parts of the region.