US President Donald Trump will visit Britain for NATO's 70th-anniversary summit next month, the White House said Friday, in a trip falling days before the country votes in a general election.

British Prime Minister Boris Johnson is seeking to retain power in the December 12 election that has been dominated by Brexit - a hugely divisive plan for which Trump has voiced strong support.

The president, who backs Brexit, even in a "no-deal" scenario with the European Union, has already roiled the election campaign by suggesting last month that the terms of Johnson's current EU divorce deal mean London could struggle to continue to trade with the US.

Copyright Agence France-Presse, 2019