Iranian Foreign Minister Mohammad Javad Zarif speaks to the media at the International Conference Centre of Geneva, Sunday, Nov. 24, 2013, in Geneva, Switzerland. Iran struck a historic nuclear deal Sunday with the United States and five other world powers, in the most significant development between Washington and Tehran in more than three decades of estrangement between the two nations. The agreement commits Iran to curb its nuclear activities in exchange for limited and gradual sanctions relief.(AP Photo/Carolyn Kaster, Pool)