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Barack Obama has cancelled a meeting with Philippine president Rodrigo Duterte after the latter called him the "son of a whore".
The two men were due to meet for the first time on Tuesday afternoon at the ASEAN summit in Laos.
A White House spokesman said the talks had been scrapped after Mr Duterte insulted Mr Obama.
On Monday, the Filipino leader called Mr Obama "a son of a whore" as he warned him not to raise questions about extrajudicial killings.