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.

PUTRAJAYA, Malaysia (AP) — Thailand and Cambodia have agreed to an “unconditional” ceasefire starting at midnight, Malaysian Prime Minister Anwar Ibrahim said Monday, a significant breakthrough to resolve five days of deadly border clashes that have killed dozens and displaced tens of thousands of people.

Ceasefire talks between Cambodia and Thailand were underway in Malaysia on Monday after days of deadly clashes on their disputed border sent civilians scrambling for safety and relations between the two neighbors cratering.