Watch: 'Time for Ukraine to get a new president', says Trump

US President Donald Trump has called for new leadership in Ukraine, criticising President Volodymyr Zelensky for striking Russian oil refineries.

"It's time for Ukraine to get a new president" he told reporters.

On Friday Trump announced a deal with Moscow to import Russian diesel, a deal Zelensky described as "a gift" to President Putin.

Read more about the rising tensions between the US and Ukraine.