It comes as the White House says Friday's meeting with the Russian president in Alaska will be a "listening exercise" for Trump.

Volodymyr Zelensky said in a new interview that he believes Vladimir Putin will significantly "benefit" from his meeting with Trump.

Ukrainian President Volodymyr Zelensky will be in Berlin on Wednesday to personally take part in video conferences on the upcoming meeting in Alaska between Russian President Vladimir Putin and US President Donald Trump over the war in Ukraine.