Roberts: Obama is the worst president since Carter

Andrew Roberts has been living in the US for the last four years, and is a great believer in the "Special Relationship".

But the British historian said the legacy that Obama will leave behind will show he turned out to be the worst president since Jimmy Carter.

He said the US was not popular when George W. Bush was in charge, but at least it was feared and respected, but was now not feared, respected or popular.

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