Nancy Pelosi, the Democratic leader of the House of Representatives, has said Donald Trump 'obviously seemed frightened' in his Helsinki press conference with the Russian president, Vladimir Putin. 'Putin also appears to be President Trump's puppeteer,' she said, adding that if Moscow was blackmailing Trump, it was a level of blackmail the American people could not afford.

Pelosi called on Trump to apologise for his 'disgraceful, dangerous and damaging behaviour'.