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
A member of Iraq's elite counterterrorism service flashes the "V" for victory sign Tuesday in Ramadi, the capital of Iraq's Anbar province. Iraq's prime minister says the extremist group will be pushed out of Iraq in 2016.
Ahmad Al-Rubaye/AFP/Getty Images