U.S. President Donald Trump said on Tuesday he did not want to interfere in Britain's election, but that he thought current Prime Minister Boris Johnson was very capable and would do a good job. 'I think Boris is very capable and I think he'll do a good job,' Trump said in London, where he is attending a meeting of NATO leaders. Trump also reaffirmed his support for Brexit - the central objective of Johnson's election campaign. Britain holds its election on Dec. 12.