Cambodia and Thailand have agreed to an immediate and unconditional ceasefire from midnight tonight (local time, 20:00 Greek time), in an effort to end the deadliest conflict between them in over 10 years, after five days of fierce hostilities, which led to the displacement of at least 300,000 people.

After days of efforts by the head of the regional body ASEAN, Malaysia, the United States and China to bring the two sides to the table, the leaders of the two countries agreed to end hostilities, resume direct communication and set up a mechanism to implement the ceasefire. At least 36 people were killed during the conflict, mostly civilians.

After more than two hours of talks at his official residence in Putrajaya, Malaysian Prime Minister Anwar Ibrahim, flanked by the leaders of Thailand and Cambodia, said he was ready to deploy a team to monitor and ensure the implementation of the ceasefire agreement.

Thailand and Cambodia reached a swift ceasefire under ASEAN's mediation!

Congratulations to the people of both countries!

Thanks to ASEAN, and special thanks to Malaysia! 🇹🇭❤️🇰🇭❤️🇲🇾❤️🕊 pic.twitter.com/fO4zTcAcgA

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It is a critical first step towards de-escalation and the restoration of peace and security, he told a news conference. All parties shared a commitment to peace, he added.

The two Southeast Asian countries have been at odds over border territory for decades and were bracing for conflict after the death of a Cambodian soldier in a clash in late May led to a buildup of troops on both sides. A full-scale diplomatic crisis has brought Thailand's fragile governing coalition to the brink of collapse.

The two sides accuse each other of starting the war last week, quickly deploying heavy artillery at various points along their 800km land border. Thailand has launched airstrikes with F-16 fighter jets.

US President Donald Trump spoke to the two leaders over the weekend, warning that he would not make trade deals with them unless they stopped fighting. Both sides face 36% import tariffs on goods exported to the US, their biggest export market.

Who did Phnom Penh and Bangkok thank?

Cambodian Prime Minister Hun Sen thanked Thai acting Prime Minister Phumdam Uetchayatsai for what he described as his positive role and said he greatly appreciated Trump's decisive mediation and China's constructive participation.

"We agreed that the clashes will stop immediately," he said, expressing confidence that the two sides can restore trust."The solutions proposed by Prime Minister Anwar will set the conditions for us to move forward with bilateral discussions, returning to normality, and laying the foundation for future de-escalation."

Tensions rose last week when Thailand recalled its ambassador to Phnom Penh and expelled the Cambodian ambassador after a second Cambodian soldier lost his leg in a minefield that Bangkok said had been recently laid by Cambodian soldiers.

Cambodia has strongly denied the accusation, as well as that it fired on civilian targets, including schools and hospitals in Thailand.

Hun Manet last week accused Thailand of an unprovoked and premeditated military attack.

Thai leader Phumtam, who had expressed doubts about Cambodia's sincerity, said Bangkok had agreed to a ceasefire, which would be successfully implemented in good faith by both sides.

Today's outcome reflects Thailand's desire for a peaceful resolution, while continuing to protect our sovereignty and the lives of our people, he said, thanking Trump and Malaysia.