TOPSHOT - ADDING EXTRA INFORMATION
Members of Iraqi forces walk near a MRAP armoured vehicle used by US forces supporting Iraq troops during the operation to recapture Mosul from the Islamic State group, at the Qayyarah military base, about 60 kilometres (35 miles) south of the city, on October 18, 2016.
Tens of thousands of Iraqi forces were making gains on the Islamic State group in Mosul in an offensive US President Barack Obama warned would be a "difficult fight". / AFP / BULENT KILIC / ALTERNATIVE CROP (Photo credit should read BULENT KILIC/AFP via Getty Images)
