Donald Trump has been told to 'grow up' by outgoing US vice-president Joe Biden.
Donald Trump has been told to 'grow up' by outgoing US vice-president Joe Biden.
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The president-elect has launched a series of attacks on American intelligence agencies – questioning their claims Russia was behind hacks targeting the Democratic party.
Mr Trump will take office in a fortnight and Mr Biden says the incoming commander-in-chief needs to get serious
