Iraqi federal police members patrol the street in western Mosul, Iraq, on March 29, 2017. Iraqi forces on Wednesday pushed further toward the old city center of the western side of Mosul amid fierce clashes with Islamic State (IS) militants, the Iraqi military said. The troops have been fighting street by street in Mosul's old city center, but they were slowed by the heavy resistance of IS militants and the presence of some 500,000 people living in the old houses with narrow allies. (Xinhua/Yaser Jawad)