Current Trends in Islamist Ideology

Yemeni soldiers watching a funeral for policemen killed by a car bombing in Sanaa, January 9, 2015 (Mohammed Huwais/AFP/Getty Images).

Iraqi demonstrators shout slogans during an anti-government protest in the western city of Ramadi on March 15, 2013. (AZHAR SHALLAL/AFP/Getty Images)

Iraqi demonstrators shout slogans during an anti-government protest in the western city of Ramadi on March 15, 2013. (AZHAR SHALLAL/AFP/Getty Images)

Iraqi demonstrators shout slogans during an anti-government protest in the western city of Ramadi on March 15, 2013. (AZHAR SHALLAL/AFP/Getty Images)

Uighur people (C) walk near police as they form a line across a street on July 8, 2009 in Urumqi, China. (Guang Niu/Getty Images)

Rebel fighters inspecting the wreckage of a Syrian army helicopter after Islamic State of Iraq and the Levant (ISIL)'s fighters allegedly destroyed it when they left the Meng Military Airport, Aleppo, March 1, 2014 (MOHAMMED AL-KHATIEB/AFP/Getty Images)

Egyptian soldiers are seen standing guard in military vehicles in Cairo's Tahrir square on January 26, 2014 the day after thousands of demonstrators protested in the square. (AHMED TARANH/AFP/Getty Images)