The US president says he is "disappointed" in Putin and will be sending "top-of-the-line" weapons to Ukraine, via Nato.

President Donald Trump opened his remarks alongside NATO Secretary-General Mark Rutte in the Oval Office on Monday by threatening "severe tariffs" against Russia. "We're very, very unhappy with them," Trump said of Russia. "And we're going to be doing very severe tariffs if we don't have a deal in 50 days."