US President Donald Trump has abruptly shut down an interview inside the Oval Office when the questioner veered into awkward territory.

Trump gave CBS This Morning reporter John Dickerson a tour of the White House and discussed a wide range of topics, including how he has grappled with the magnitude of the decisions he has had to make.

But at the end of the interview, Trump was not so forthcoming.

Dickerson asked whether he stood by his claim that Barack Obama had ordered the wire-tapping of Trump Tower.

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