While international confidence in Trump's handling of world affairs has flagged across Europe and most of the rest of the world, opinions of the US President remained mostly positive in two of Africa's most populous countries, the research finds.

Sixty-five percent of Kenyans and 58% of Nigerians believe Trump "will do the right thing regarding world affairs," it finds.

By contrast, trust in Trump dips in the other two African countries polled, with just 12% of those in Tunisia -- in the continent's north -- and 42% of South Africans confident of his global decisions, polls show.

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