"Indisputable progress" in Iran nuclear talks - Russian envoy

Russian envoy to the Iran nuclear talks in Vienna Mikhail Ulyanov said on Tuesday that the working group was making "indisputable progress."

"Today in the course of #ViennaTalks on JCPOA the working group on nuclear issues held a useful meeting. We observe indisputable progress. Sanctions lifting is being actively discussed in informal settings," Ulyanov wrote on Twitter.

Ulyanov is attending the 8th round of the Vienna Talks, which are about reviving the Joint Comprehensive Plan of Action (JCPOA) by bringing the United States back into the deal through sanctions lifting, and Iran through full implementation of its nuclear commitments.