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An family photo album lies among debris and blood where civilians were shot down by Islamic State snipers in early June, in Mosul, Iraq, June 15, 2017.

Children are among the dead as fleeing civilians are shot down by IS militants in Mosul, Iraq. Photo taken June 15, 2017.

Hazzam Abdulghani, right, and his brother examine a body to see if it their 17-year-old nephew, Dhyab Idris Abdulghani, in Mosul, Iraq, June 15, 2017.

Hazzam Abdulghani holds up prayer beads he finds on the body, cursing IS and saying he knows now it is his nephew in Mosul, Iraq, June 15, 2017.

Airstrikes and car bombs over Old Mosul and surrounding areas as Iraqi forces have all but surrounded IS's last stronghold in the city in Mosul, Iraq, June 15, 2017.

Ahmed Ghalibi, a fighter with the Emergency Response Division says the upcoming battle for Old Mosul, IS's last stronghold in the city, may prove to be the most difficult battle to date in Mosul, Iraq, June 15, 2017.

Iraqi soldiers say the Old City is surrounded, but the frontlines are fluid as IS continues to fight to expand, taken in Mosul, Iraq, June 15, 2017.