Russian President Vladimir Putin has ratcheted up tensions with Europe, warning that if the bloc starts a war with Russia, Moscow is ready.

The two sides did not reach any specific compromises, an aide to President Vladimir V. Putin said, as the United States pushes a plan to end the war in Ukraine.

Russian President Vladimir Putin said that his country is prepared to fight against European nations, many of which are part of the North Atlantic Treaty Organization (NATO), in a comments to reporters on Tuesday.

U.S. special envoy Steve Witkoff is meeting with Russian President Vladimir Putin to discuss a peace plan that Washington hopes can end the nearly four-year war in Ukraine.

Russian President Vladimir Putin issued a new warning to European countries over Ukraine peace talks. The Kremlin also called Putin’s meeting with Trump envoys ‘productive’. NBC News’ Keir Simmons reports.

LONDON -- The White House said it's is "very optimistic" ahead of special envoy Steve Witkoff's meeting in Moscow on Tuesday with Russian President Vladimir Putin, as U.S. officials continue their push to end Russia's war against Ukraine.

Russian President Vladimir Putin is in India this week for a summit focused on strengthening economic, defense and energy ties.

Russian President Vladimir Putin has claimed without evidence that Russian forces have taken control of Ukrainian cities Pokrovsk and Vovchansk.