Published on 25 Oct 2013 | The top U.S. nuclear negotiator is calling for a pause in U.S. congressional efforts to impose sanctions on Iran, weeks after accusing Iran of being deceptive about its nuclear program.In an exclusive interview Friday with VOA's Persian service, U.S. Undersecretary of State Wendy Sherman said any push for additional U.S. sanctions should be delayed to see if nuclear talks can "gain traction."
