Donald Trump has said that he is disappointed but not done with Vladimir Putin, in an exclusive phone call with the BBC.
The US president was pressed on whether he trusts the Russian leader, and replied: "I trust almost nobody."
Trump was speaking hours after he announced plans to send weapons to Ukraine and warned of severe tariffs on Russia if there was no ceasefire deal in 50 days.
In an interview from the Oval Office, the president also endorsed Nato, having once described it as obsolete, and affirmed his support for the organisation's common defence principle.
