KYIV, Ukraine — A senior Kremlin official confirmed Wednesday that U.S. special envoy Steve Witkoff is set to visit Moscow next week as efforts pick up speed to find a consensus on ending the nearly four-year war between Russia and Ukraine.

But Yuri Ushakov, Russian President Vladimir Putin’s foreign affairs adviser, insisted that Kremlin officials haven’t officially received the initial U.S. peace proposal, although they have acknowledged that they have seen a copy obtained through back channels. Representatives of the United States, Russia and Ukraine held talks earlier this week in the United Arab Emirates.

“Contact is ongoing, including via telephone, but no one has yet sat down at a roundtable and discussed this point by point. That hasn’t happened,” Mr. Ushakov told Russian state m

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