Thai and Cambodian leaders agreed to halt hostilities in their deadliest border conflict in more than a decade, after a push by the US and regional powers for a diplomatic resolution.

Thailand accused Cambodia on Wednesday of a “flagrant violation” of a truce deal to end cross-border fighting, saying Cambodian troops launched

Cambodia went back to the court in 2011, following several clashes between its army and Thai forces that killed about 20 people and displaced thousands. The court reaffirmed the ruling in Cambodia’s favor in 2013. Cambodia has again turned to the international court to resolve the border disputes but Thailand has rejected the court’s jurisdiction.