Samraong (Cambodia) (AFP) - Thailand and Cambodia exchanged heavy artillery fire for a third straight day Saturday, as a border conflict that has killed at least 33 people and displaced more than 150,000 from their homes spread across the frontier.

Clashes broke out for the first time in the countries’ coastal regions where they meet on the Gulf of Thailand, around 250 kilometres (160 miles) southwest of the main front lines, thumping with blasts on Saturday afternoon.

“It feels like I’m escaping a war zone,” 76-year-old Samlee Sornchai told AFP at a temple shelter for evacuees in the Thai town of Kanthararom, after abandoning his farm near the embattled frontier.

Both sides say they are open to a truce, after a long-running border dispute erupted into combat with jets, tanks and ground troops this week, but each has accused the other of undermining armistice efforts.

In a bid to end the conflict, US President Donald Trump said he spoke to Cambodian leader Hun Manet and Thailand’s acting Prime Minister Phumtham Wechayachai on Saturday and both wanted “an immediate Ceasefire, and PEACE”.

“After speaking to both Parties, Ceasefire, Peace, and Prosperity seems to be a natural. We will soon see!” Trump wrote on his Truth Social platform.

He also indicated he would not move forward on trade deals with either nation until fighting has stopped.

Like most countries, the Southeast Asian neighbours are facing steep import tariffs from Washington if they do not secure a trade agreement with the Trump administration by August 1.

Tensions initially flared over long-contested ancient temple sites before fighting spread along the rural border region, marked by a ridge of hills surrounded by wild jungle and agricultural land where locals farm rubber and rice.

Cambodia’s defence ministry said 13 people have been confirmed killed in the fighting since Thursday, including eight civilians and five soldiers, with 71 people wounded.

Thai authorities say 13 civilians and seven soldiers have died on their side, taking the toll across both nations higher than it was in the last major round of fighting between 2008 and 2011.

Both sides reported a coastline clash early Saturday, with Cambodia accusing Thai forces of firing “five heavy artillery shells” into Pursat province, bordering Thailand’s Trat province.

The conflict has also forced more than 138,000 people to be evacuated from Thailand’s border regions, and more than 35,000 driven from their homes in Cambodia.

After an urgent United Nations Security Council meeting Friday in New York, Cambodia’s UN ambassador Chhea Keo said his country wanted a ceasefire.

“Cambodia asked for an immediate ceasefire – unconditionally – and we also call for the peaceful solution of the dispute,” he told reporters.

- Scramble for dialogue -

Thai Foreign Minister Maris Sangiampongsa said Saturday that for any ceasefire or talks to proceed, Cambodia needed to show “genuine sincerity in ending the conflict”.

“I urge Cambodia to stop violating Thai sovereignty and to return to resolving the issue through bilateral dialogue,” Maris told reporters.

Thai Foreign Ministry spokesman Nikorndej Balankura said Friday, before the UN meeting was held, that Bangkok was open to talks, possibly aided by Malaysia.

Malaysia currently chairs the ASEAN regional bloc, of which Thailand and Cambodia are members.

Both sides have blamed the other for firing first.

Additionally, Cambodia has accused Thai forces of using cluster munitions, while Thailand accused Cambodia of targeting civilian infrastructure, including a hospital hit by shells.

Former Thai prime minister Thaksin Shinawatra – still an influential figure in the kingdom – visited shelters Saturday to meet evacuees.

“The military needs to complete its operations before any dialogue can take place,” Thaksin told reporters.

The fighting marks a dramatic escalation in a long-running dispute between the neighbours – both popular destinations for millions of foreign tourists – over their shared 800-kilometre border where dozens of kilometres are contested.

A UN court ruling in 2013 settled the matter for more than a decade, but the current crisis erupted in May when a Cambodian soldier was killed in a border clash.

Relations soured dramatically when Hun Sen last month released a recording of a call with Thailand’s then-prime minister Paetongtarn Shinawatra focused on the row.

The leak triggered a political crisis in Thailand as Paetongtarn – Thaksin’s daughter – was accused of not standing up for Thailand enough, and of criticising her own army.

She was suspended from office by a court order.

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