In this Friday, Nov. 2, 2012, file photo, Iranian female demonstrators burn a representation of U.S. flag, and a caricature of President Barack Obama, in an annual state-backed rally in front of the former U.S. Embassy in Tehran, Iran, commemorating 33rd anniversary of the embassy takeover by militant students. (AP Photo/Vahid Salemi, File)

Photo by: Vahid Salemi

In this Friday, Nov. 2, 2012, file photo, Iranian female demonstrators burn a representation of U.S. flag, and a caricature of President Barack Obama, in an annual state-backed rally in front of the former U.S. Embassy in Tehran, Iran, commemorating 33rd anniversary of the embassy takeover by militant students. (AP Photo/Vahid Salemi, File)