US President Donald Trump is briefing Ukrainian President Volodymyr Zelensky and other European leaders about his summit with Russia's Vladimir Putin, German government sources told dpa on Saturday morning.

US President Donald Trump called Vladimir Zelensky and NATO colleagues after meeting with Russian leader Vladimir Putin in Alaska, White House Press Secretary Karoline Leavitt told reporters.

President Trump had a long call with Ukrainian President Volodymyr Zelensky during his flight back to Washington about his talks with Russian President Vladimir Putin, White House Press Secretary Karoline Leavett said.