Iran's President Hassan Rouhani arrives for an address to the nation after a nuclear agreement was announced in Vienna, in Tehran, Iran, Tuesday, July 14, 2015. Rouhani said "a new chapter" has begun in his nation's relations with the world. He maintained that Iran had never sought to build a bomb, an assertion the U.S. and its partners have long disputed. (AP Photo/Ebrahim Noroozi)
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