Witkoff heads to Russia amid building frustration in the White House, with six months of diplomacy under Trump having failed to achieve a peace deal -- or even a ceasefire -- to end Moscow's full-scale invasion of its neighbor, which began in February 2022.

The U.S. envoy is set to discuss with Russia how to end the war President Vladimir Putin began, U.S. President Donald Trump said.

U.S. President Donald Trump's special envoy Steve Witkoff is expected to visit Russia on Wednesday, state news agency TASS said on Monday, citing Russian and U.S. sources.