Thailand's prime minister will travel to Malaysia to sign a ceasefire deal with Cambodia - that US President Donald Trump is set to witness - after he pulled out of the ASEAN Summit due to the death of the kingdom's Queen Mother Sirikit.

Foreign ministers of the Association of Southeast Asian Nations were meeting on Saturday to start a weekend of global diplomacy in Kuala Lumpur, with teams from the United States and China holding trade talks alongside the summit.

Trump is due to arrive on Sunday morning for the first stop of his trip through Asia, and was set to watch Cambodia and Thailand sign a broader ceasefire deal after he helped broker an end to a deadly five-day border conflict in July.

Dozens of people were killed and about 300,000 were temporarily displaced in the most intense

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