President Donald Trump warned that "severe consequences" lie ahead for Russia if Russian President Vladimir Putin doesn't agree to stop the Ukraine war after they meet for a high-stakes summit in Alaska on Friday.

The talks on Friday in Alaska pull the Russian leader out of diplomatic isolation from the West, and Ukrainian and European leaders fear it gives him an opening to sway the American president.

Fadeev also said Russia's stance on ending the war in Ukraine has not changed since Putin laid out his conditions last year: the full withdrawal of Ukrainian troops from parts of the Ukrainian regions of Donetsk, Zaporizhzhia and Kherson that they still control, and Ukraine abandoning its plans to join the NATO alliance.