On Monday Philippine President Rodrigo Duterte called Barack Obama a “son of a whore” as he vowed not to be lectured by the US leader on human rights when they meet in Laos.

Philippines’ President Rodrigo Duterte delivers his pre-departure message before leaving for the ASEAN Summit in Laos. (TimesLive)

On Tuesday Zimbabwean dictator Robert Mugabe weighed in on the controversy.

Mugabe told reporters Obama should prove he is not the son of a whore.

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