Thailand in particular was very uneasy about internationalising the border conflict, and only agreed to the ceasefire because President Trump held a tariff gun to its head; at the time both Thailand and Cambodia were just days away from a deadline to negotiate significantly lower tariff rates on their vital exports to the US.

The self-styled “President of Peace” touts ending conflicts around the world. Renewed fighting in Cambodia is just the latest example of how many actually remain unresolved.