Iranians wave the national flag during celebrations in Tehran on July 14, 2015, after Iran's nuclear negotiating team struck a deal with world powers in Vienna.

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Iranians wave the national flag during celebrations in  Tehran on July 14, 2015, after Iran's nuclear negotiating team struck a deal with world powers in Vienna.
Iranians wave the national flag during celebrations in  Tehran on July 14, 2015, after Iran's nuclear negotiating team struck a deal with world powers in Vienna. 
Credit: ATTA KENARE/AFP/Getty Images
Iranians wave the national flag during celebrations in Tehran on July 14, 2015, after Iran's nuclear negotiating team struck a deal with world powers in Vienna.