President Donald Trump has threatened further sanctions against Russia if Vladimir Putin did not agree to negotiations to end the war in Ukraine, it has been reported. Trump said he was talking to Ukrainian president Volodymr Zelensky and that the U.S. president would have a conversation with the Russian president "very soon," Reuters reported.

U.S. President Donald Trump said on Tuesday he would likely impose sanctions on Russia if its president, Vladimir Putin, refuses to negotiate about ending the war in Ukraine.

Russian President Vladimir Putin made positive remarks about Donald Trump’s election victory after his inauguration, saying he had “courage” and clinched a “convincing victory.” President Trump failed to reciprocate those remarks,