UK ambassador to the US resigns after calling Trump administration 'inept'. Britain's Ambassador to the United States, Kim Darroch, has resigned after a series of leaked diplomatic cables revealed he told 10 Downing Street that the Trump administration was "Inept" and "Clumsy." The UK Foreign Office announced the resignation on Wednesday. It comes after President Donald Trump said Monday that the White House would no longer deal with the British ambassador. Ref. CNN.