Donald Trump pledged to end the conflict in Ukraine, but the war has proved harder to solve than he once thought. Now, he says he'll sanction Russia.

In a post to Truth Social, President Trump threatened to hit Russia with tariffs if Vladimir Putin refuses to make a deal on the Ukraine war.

Putin has said repeatedly that he is prepared to negotiate an end to the war, which first began in 2014, but that Ukraine would have to accept the reality of Russian territorial gains, which are currently about 20% of its land. He also refuses to allow Ukraine to join Nato.