The US special presidential envoy added that he felt confident about a possible deal between Russia and the United States WASHINGTON, April 15. /TASS/. The United States is making progress in its talks with Russia on the Ukrainian conflict settlement, US Special Presidential Envoy Steve Witkoff said in an interview with Fox News TV channel. Asked whether there was a deal on Ukrainian conflict settlement emerging with Russian President Vladimir Putin, Wikoff replied: "I think you have used a