TOPSHOT - Iraqi troops advance towards Mosul's on February 24, 2017 during an ongoing offensive to retake the northern city from jihadists of the Islamic State group
Iraqi forces entered west Mosul neighbourhoods, a key stronghold in the shrinking 'caliphate' of the Islamic State group, which replied with deadly suicide attacks in Iraq and Syria. The elite Counter-Terrorism Service that did most of the fighting in the four-month-old Mosul offensive entered a neighbourhood further west along the city's southern limits.
 / AFP / ARIS MESSINIS        (Photo credit should read ARIS MESSINIS/AFP/Getty Images)