U.S. Secretary of State John F. Kerry arrives at Geneva Airport in Geneva, Switzerland, on Saturday, Nov. 23, 2013, for the Iran nuclear talks. (AP Photo/Denis Balibouse, Pool)

Photo by: Denis Balibouse

U.S. Secretary of State John F. Kerry arrives at Geneva Airport in Geneva, Switzerland, on Saturday, Nov. 23, 2013, for the Iran nuclear talks. (AP Photo/Denis Balibouse, Pool)