FILE PHOTO: United States Secretary of State John Kerry walks to lunch with members his negotiating team, including Robert Malley (L) from the US National Security Council, following a meeting with Iran's Foreign Minister Javad Zarif over Iran's nuclear program in Lausanne March 20, 2015. [Reuters]
President Joe Biden has named Robert Malley as special US envoy for Iran, a senior official said on Thursday, giving the veteran diplomat a leading role in one of most daunting and politically divisive foreign policy challenges facing the new administration.