The aid is earmarked to help support both countries in border stabilisation efforts, demining and tackling drug trafficking and cyberscams.

The United States has announced it will provide $45m in aid to help solidify a fragile truce brokered by President Donald Trump between Thailand and Cambodia.

Michael DeSombre, the US assistant secretary for East Asia, said on Friday that the US would offer $20m to help both countries combat drug trafficking and cyberscams, which have become a major concern in Cambodia.

DeSombre was meeting with senior Thai and Cambodian officials in Bangkok and Phnom Penh on Friday and Saturday to discuss implementation of the peace accords, according to a senior State Department official.

DeSombre also said $15m would be given for border stabilisation efforts to help support people displaced by the recent fighting, as well as $10m for de-mining and unexploded ordnance clearance.

“The United States will continue to support the Cambodian and Thai governments as they implement the Kuala Lumpur Peace Accords and pave the way for a return to peace, prosperity and stability for their people and the region,” DeSombre said in a statement.

DeSombre was referring to an agreement signed between the two countries in Trump’s presence during his October visit to Malaysia, then head of the ASEAN regional bloc.

Border clashes between Cambodia and Thailand flared up again last month, after the collapse of a truce brokered in July by Trump and Malaysian Prime Minister Anwar Ibrahim to end a previous round of conflict.

The Southeast Asian neighbours agreed on another ceasefire on December 27, halting 20 days of fighting that killed at least 101 people and displaced more than half a million on both sides.

Thailand accused Cambodia of violating this latest ceasefire, though later retracted the accusation, with the Thai military saying the Cambodian side had contacted them to explain the so-called violation was an accidental fire.

Cambodia, meanwhile, has called on Thailand to pull its forces out of several border areas that Phnom Penh claims as its own.

The nations’ longstanding conflict stems from a dispute over France’s colonial-era demarcation of their 800km (500-mile) border, where both sides claim territory and several centuries-old temple ruins.

Trump has listed the conflict as one of several wars he says he has solved as he loudly insists he deserves the Nobel Peace Prize.

Trump, on taking office, drastically slashed foreign aid, including for months freezing longstanding assistance to Cambodia for de-mining, with the administration saying it will provide money only in support of narrow US interests.

US citizens have been targeted by financial fraud operations taking place at scam centres throughout Southeast Asia.

Thailand is a longtime US ally, while the US has sought to improve relations with Cambodia to try to woo it away from strategic rival China.