Thai and Cambodian leaders agreed to an unconditional ceasefire to end the deadliest border conflict in more than a decade, after a push by the US and regional powers for a diplomatic resolution.

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's leaders agreed to an "unconditional" ceasefire Monday, after five days of combat along their jungle-clad frontier that has killed at least 36 people.Reading a joint statement from the leaders of both countries after peace talks,