Medvedev is deputy to Russian President Vladimir Putin on the Security Council of Russia, which advises Putin on national security and strategic matters, and is himself a former president and prime minister of the country.

The US president says he is "not happy" with Russia's Vladimir Putin and that Ukraine is "getting hit very hard".

The U-turn was announced during a White House dinner Mr Trump was hosting for Binyamin Netanyahu, the visiting Israeli prime minister. Sitting next to him Pete Hegseth, America’s defence secretary, nodded in assent,