A member of the Iraqi government forces flashes the sign for victory in the embattled city of Fallujah on June 18, 2016 as they hunt down holdout jihadists after retaking the Islamic State (IS) group's last remaining major hub in Iraq. While not fully under government control yet, Fallujah is the latest in a string of battlefield losses for IS, which has seen its two-year-old "caliphate" shrink significantly in recent months. / AFP / STRINGER (Photo credit should read STRINGER/AFP/Getty Images)
