A member of Iraq's government forces battling Islamic State fighters in Anbar province earlier this month. Haidar Hamdani/AFP/Getty Images hide caption

itoggle caption Haidar Hamdani/AFP/Getty Images

Haqqathon-ers from the winning team, which developed the social media site Champions of Islam, at the event in Abu Dhabi, United Arab Emirates. Courtesy of Rim-Sarah Alouane hide caption

itoggle caption Courtesy of Rim-Sarah Alouane

A playground is seen in London, outside an address where Kuwaiti-born London computer programmer Mohammed Emwazi is believed to have lived. Emwazi has been identified as masked ISIS militant "Jihadi John." Niklas Halle'n/AFP/Getty Images hide caption

itoggle caption Niklas Halle'n/AFP/Getty Images