Pete Buttigieg drops out of US Democratic race

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The former Indiana mayor, Pete Buttigieg, has announced he is pulling out of the race to become the Democratic Party's candidate in the US presidential elections. Scientists say the coronavirus may have been spreading undetected in the western United States for several weeks, and that hundreds of Americans could be infected. And we try to find out why the Sahel region in Africa has become the epicentre one of the world’s fastest growing Islamist insurgency.