Russian presidential envoy Kirill Dmitriev will meet U.S. special representative Steve Witkoff in Moscow on Tuesday, sources close to U.S.-Russia talks told Reuters.

As the Trump administration rushes to secure a peace deal to end the war in Ukraine, President Donald Trump is dispatching two of his highest profile diplomats to Moscow.

The White House said it 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.

NATO considers 'more aggressive' stance against Russia's hybrid warfare, including pre-emptive cyber operations, as tensions escalate over sabotage.

As a U.S. envoy heads to Moscow to negotiate over a complex blueprint for peace in Ukraine, Russian Nobel Peace Prize winner Dmitry Muratov says a vital element is missing from the agenda.

President Trump's peace plan became public last month, sparking alarm that it was too favorable to Moscow. It was revised following talks in Geneva between the U.S. and Ukraine a week ago.