President Barack Obama talks on the phone with Chancellor Angela Merkel of Germany in the Oval Office, March 27, 2015. Attendees from left are Sahar Nowrouzzadeh, Director for Iran; National Security Advisor Susan E. Rice; Phil Gordon, White House Coordinator for the Middle East, North Africa, and the Gulf Region; Charles Kupchan, Senior Director for European Affairs and Avril Haines, Deputy National Security Advisor. (Official White House Photo by Pete Souza)