Fresh cross-border clashes between Thailand and Cambodia broke out on Sunday hours after US President Donald Trump announced the two Southeast Asian nations had agreed to ceasefire talks.

Thailand and Cambodia have agreed to hold talks in Malaysia on Monday in an attempt to negotiate an end to a conflict that has lasted four days.

The current conflict between Cambodia and Thailand is a deeply troubling development in Southeast Asia. The recent clashes along the shared border between the two countries have reignited an old territorial dispute that had previously remained contained to diplomatic disagreements and minor skirmishes.