In this Wednesday, January 18, 2017 file photo, Ibrahim Othman, 15, tends to his family's pigeons on the roof of his house, in a neighborhood recently liberated from Islamic State militants, in eastern Mosul, Iraq. For the first time in over two years, flocks of white and grey pigeons can be seen circling Mosul’s rooftops. Among the many strict rules imposed by the Islamic State group in the northern Iraqi city was a ban on breeding or flying the birds. Many Mosul residents killed off their flocks or confined them to cages, but Ibrahim and his brother, Mustafa couldn’t bring himself to do it. (Photo by Khalid Mohammed/AP Photo)





Displaced people who left their homes due to war travel past Iraqi soldiers during a battle with Islamic State militants in the Arabi neighborhood, north of Mosul, Iraq, January 23, 2017. (Photo by Khalid al Mousily/Reuters)





Members of Iraqi security forces walk as they carry their weapons during a battle with Islamic State militants in Arabi neighborhood, north of Mosul, Iraq, January 23, 2017. (Photo by Khalid al Mousily/Reuters)





A man carries his child as he flees his home as Iraqi forces battle with Islamic State militants in Arabi neighborhood, north of Mosul, Iraq, January 23, 2017. (Photo by Khalid al Mousily/Reuters)





Buildings destroyed during previous clashes are seen as Iraqi forces battle with Islamic State militants in Mosul, Iraq January 23, 2017. (Photo by Ahmed Jadallah/Reuters)





Buildings destroyed during previous clashes are seen as Iraqi forces battle with Islamic State militants in Mosul, Iraq January 23, 2017. (Photo by Marius Bosch/Reuters)





A member of Iraqi security forces rides in a military vehicle during a battle with Islamic State militants in Mosul, Iraq January 23, 2017. (Photo by Marius Bosch/Reuters)





Destroyed vehicle from previous clashes are seen as Iraqi forces battle with Islamic State militants in Mosul, Iraq January 23, 2017. (Photo by Marius Bosch/Reuters)





Children collect water for their families at al Zohour area in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





A child walks near her family home at al Zohour area in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





A member of the Iraqi Special Operations Forces (ISOF) stands guard at al Zohour area in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Restaurant workers are pictured at al Zohour area in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Restaurant workers are pictured at al Zohour area in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Restaurant workers are pictured at al Zohour area in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Restaurant workers are picture at al Zohour area in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





A man speaks on his phone next to destroyed houses at al Zohour area in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





A man rides a motorbike with his children at al Zohour area in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Children collect water for their families at al Zohour area in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





A boy collects water at al Zohour area in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Schoolchildren react to a camera as they attend in a class after registering in school in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Schoolchildren leave after registering at a school and receiving their new school bags in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Parents of schoolchildren walk to register their children in school in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Schoolchildren react to the camera through a window as they attend class after registering in school in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





A mother adjusts her daughter's hat before she enters a classroom in school in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Schoolchildren react to the camera as they attend class after registering in school in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Schoolchildren wait to receive new school bags after their registration at a school in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Fresh graves are seen on a school compound in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Schoolchildren pose after they registered in a school and received their new school bags in Mosul, Iraq, January 23, 2017. (Photo by Muhammad Hamed/Reuters)





Displaced children and youth who fled the clashes queue to receive aid from Iraqi security forces in Antesaar neighborhood of Mosul, Iraq, January 24, 2017. (Photo by Alaa Al-Marjani/Reuters)





A member of Iraqi rapid response forces fires a weapon towards Islamic State militants in Antesaar neighborhood of Mosul, Iraq, January 24, 2017. (Photo by Alaa Al-Marjani/Reuters)





Smoke rises from mortar shell during a battle with Islamic State militants in in Antesaar neighborhood of Mosul, Iraq, January 24, 2017. (Photo by Alaa Al-Marjani/Reuters)





A female military uniform is seen in a store in Erbil, Iraq January 24, 2017. (Photo by Marius Bosch/Reuters)





Military supplies for women is seen in a store in Erbil, Iraq January 24, 2017. (Photo by Marius Bosch/Reuters)





Military items for women are seen in a store in Erbil, Iraq January 24, 2017. (Photo by Marius Bosch/Reuters)





Military items for women are seen in a store in Erbil, Iraq January 24, 2017. (Photo by Marius Bosch/Reuters)





Military items for women are seen in a store in Erbil, Iraq January 24, 2017. (Photo by Marius Bosch/Reuters)





Military items for women are seen in a store in Erbil, Iraq January 24, 2017. (Photo by Marius Bosch/Reuters)





Kurdish people shop for female military uniforms in Erbil, Iraq January 24, 2017. (Photo by Marius Bosch/Reuters)





Displaced people who fled the Islamic State stronghold of the Arabi neighborhood, north of Mosul arrive to register their names at a military checkpoint before being transported to the camps in the east of Mosul, Iraq, January 25, 2017. (Photo by Muhammad Hamed/Reuters)





Displaced children who fled the Islamic State stronghold of the Arabi neighborhood, north of Mosul with their families carry their chickens as they wait to register their names at a military checkpoint before being transported to the camps in the east of Mosul, Iraq, January 25, 2017. (Photo by Muhammad Hamed/Reuters)





An Iraqi soldier poses next to a vehicle used for suicide car bombings, made by Islamic State militants, in Mosul, Iraq, January 25, 2017. (Photo by Muhammad Hamed/Reuters)





An Iraqi officer displays Russian passports, which he says belong to Islamic State fighters, in Mosul, Iraq, January 25, 2017. (Photo by Muhammad Hamed/Reuters)





Iraqi soldiers inspect a vehicle used for suicide car bombings, made by Islamic State militants, in Mosul, Iraq, January 25, 2017. (Photo by Muhammad Hamed/Reuters)





A member of the Iraqi rapid response forces fires during a battle with Islamic State militants at the Tigris river frontline near Mosul, Iraq, January 25, 2017. (Photo by Ahmed Jadallah/Reuters)





Displaced Iraqis gather near a fire to warm up after fleeing the battle between Iraqi rapid response forces and Islamic State militants near Mosul, Iraq, January 25, 2017. (Photo by Ahmed Jadallah/Reuters)





A displaced Iraqi woman covers her daughter during cold weather after fleeing the battle between Iraqi rapid response forces and Islamic State militants near Mosul, Iraq, January 25, 2017. (Photo by Ahmed Jadallah/Reuters)





Iraqi children play on a crude swing along the frontline near Mosul at the Tigris river, Iraq, January 25, 2017. (Photo by Ahmed Jadallah/Reuters)





An Iraqi soldier waves as buses transport displaced Iraqs returning to their homes in east Mosul after it was retaken from Islamic State militants January 25, 2017. (Photo by Ahmed Jadallah/Reuters)





Members of the Iraqi army stand near bodies of Islamic State militants killed in clashes in the Arabi neighborhood of Mosul, Iraq January 26, 2017. (Photo by Muhammad Hamed/Reuters)





A member of the Iraqi army holds his weapon during an operation to search for weapons in the Arabi neighborhood in Mosul, Iraq January 26, 2017. (Photo by Muhammad Hamed/Reuters)





A man and a child stand in front of a house which was burned by Islamic State militants before they fled the area, in the Arabi neighborhood in Mosul, Iraq January 26, 2017. (Photo by Muhammad Hamed/Reuters)





A child is seen at a house which was burned by Islamic State militants before they fled the area, in the Arabi neighborhood in Mosul, Iraq January 26, 2017. (Photo by Muhammad Hamed/Reuters)





A member of the Iraqi army holds his weapon during an operation to search for weapons in the Arabi neighborhood in Mosul, Iraq January 26, 2017. (Photo by Muhammad Hamed/Reuters)





Members of the Iraqi army carry weapons during an operation to search for weapons in the Arabi neighborhood in Mosul, Iraq January 26, 2017. (Photo by Muhammad Hamed/Reuters)





Displaced people who fled the clashes in their area ride in the back of a car to look for a safe place, in the Arabi neighborhood in Mosul, Iraq January 26, 2017. (Photo by Muhammad Hamed/Reuters)





Displaced people who fled the clashes receive aid in northern Mosul, Iraq January 26, 2017. (Photo by Muhammad Hamed/Reuters)





A man climbs over a fence to open it for the Iraqi army members during an operation to search for weapons in the Arabi neighborhood in Mosul, Iraq January 26, 2017. (Photo by Muhammad Hamed/Reuters)





Members of the Iraqi army stand next to a man whose trousers need to be shortened according to Islamic State's tradition, in the Arabi neighborhood in Mosul, Iraq January 26, 2017. (Photo by Muhammad Hamed/Reuters)