US Deputy Secretary of State Williams Burns will join talks between Iran and the P5+1 in Vienna on Monday, a US official told Al-Monitor.
Burns was seen by Al-Monitor on the plane Sunday traveling with the US delegation, led by Undersecretary Wendy Sherman, to Vienna from Washington. He and Sherman are expected to meet Monday with Iranian and European Union negotiators. Sherman will stay on for nuclear talks between Iran and the P5+1 expected to go til Friday, as efforts intensify to reach a final nuclear accord by July 20.