An Iranian girl holds a poster with a portrait of President Hassan Rouhani (L), Iran's late leader Ayatollah Ruhollah Khomeini and Iran's Supreme Leader Ayatollah Ali Khamenei during celebrations in Tehran's Azadi Square (Freedom Square) to mark the 37th anniversary of the Islamic revolution on February 11, 2016. Iranians waved "Death to America" banners and took selfies with a ballistic missile as they marked 37 years since the Islamic revolution, weeks after Iran finalised a nuclear deal with world powers. / AFP / ATTA KENARE (Photo credit should read ATTA KENARE/AFP/Getty Images)
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