Islamic State of Iraq and SyriaIslamic State of Iraq and Syria
Islamic State of Iraq and Syria
A picture taken on Oct. 20, 2017, shows writing about the so-called Islamic State group on a wall in the recaptured Syrian town of Mayadeen. The Red Cross is urging lawful treatment of foreign fighters who traveled to Syria to join the extremists.
A member of the Syrian Democratic Forces walks on a building near Raqqa's stadium Monday, as they cleared the last positions on the front line in the fight against ISIS.
Bulent Kilic/AFP/Getty Images
Army Sgt. 1st Class Ikaika Erik Kang is accused of pledging allegiance to ISIS on July 8 in Honolulu. Images taken from an FBI video and provided by the U.S. Attorney's Office in Hawaii show him kissing an ISIS flag (left) and holding it to his forehead.
A GBU-43/B Massive Ordnance Air Blast bomb strikes ISIS-K cave and tunnel systems in Afghanistan's Nangarhar Province, in a screenshot from video released by the Pentagon.
U.S. Forces Afghanistan
An image posted online Saturday by supporters of the ISIS militant group purports to show a gun-mounted vehicle operated by the group firing at Syrian troops north of Palmyra in Homs Provence, Syria.
Kurdish Regional Government Peshmergas attend a military training exercise conducted by U.S.-led coalition trainers at the Bnaslawa military training camp in Irbil, Iraq, in March.
Yunus Keles/Anadolu Agency/Getty Images