(Reuters) -When weeks of tensions escalated into a major border conflict with Thailand last week, former Cambodian Prime Minister Hun Sen appeared to take charge of his country's response. The former guerrilla fighter is no longer Cambodia's leader,

Thailand and Cambodia agreed Monday to an unconditional ceasefire during a meeting in Malaysia, in a significant breakthrough to resolve five days of deadly border clashes that have killed dozens and displaced tens of thousands.

Thailand and Cambodia reaffirmed their shaky ceasefire on Wednesday after China helped mediate a peace process to end days of border fighting. The ceasefire reached in Malaysia was supposed to take effect at midnight on Monday,