MOSCOW, Dec 2 (Reuters) - 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. The two men have met a number of times in Russia and the United States to discuss peace proposals and future investment opportunities involving the U.

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.

Witkoff and Kushner are scheduled on Tuesday to meet Putin in Moscow.

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

By Mark Trevelyan LONDON, Dec 1 (Reuters) - 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.