An Iraqi woman, a refugee from the Baghdad area, covers her baby against the heat on the road south-east of Baghdad on April 5, 2003. U.S. tanks which pushed into southern Baghdad on Saturday rumbled back down the main southern highway from the city after linking up with U.S. forces at the airport and carrying out a reconnaissance mission.

RM2D411RX–An Iraqi woman, a refugee from the Baghdad area, covers her baby against the heat on the road south-east of Baghdad on April 5, 2003. U.S. tanks which pushed into southern Baghdad on Saturday rumbled back down the main southern highway from the city after linking up with U.S. forces at the airport and carrying out a reconnaissance mission.

An Iraqi Shiite woman bakes bread in a camp outside of Najaf, 160 kilometers (100 miles) south of Baghdad, Iraq on Tuesday, Sept. 11, 2007. The United Nations' refugee agency estimates that about 2,000 Iraqis leave their homes every day due to violence and economic uncertainty resulting from the four-year conflict. (AP Photo/Alaa al-Marjani)

RM2PB4M65–An Iraqi Shiite woman bakes bread in a camp outside of Najaf, 160 kilometers (100 miles) south of Baghdad, Iraq on Tuesday, Sept. 11, 2007. The United Nations' refugee agency estimates that about 2,000 Iraqis leave their homes every day due to violence and economic uncertainty resulting from the four-year conflict. (AP Photo/Alaa al-Marjani)

An Iraqi woman, a refugee from the Baghdad area, carries her son as she walks on a road south-east from the Iraqi capital April 5, 2003. A U.S. Marine commander said on Saturday American troops would use overwhelming force to crush any resistance if ordered to storm Baghdad and that the battle would cost many civilian lives.

RM2D4DFHB–An Iraqi woman, a refugee from the Baghdad area, carries her son as she walks on a road south-east from the Iraqi capital April 5, 2003. A U.S. Marine commander said on Saturday American troops would use overwhelming force to crush any resistance if ordered to storm Baghdad and that the battle would cost many civilian lives.

An Iraqi Shiite woman carries a television on her head in a camp outside of Najaf, 160 kilometers (100 miles) south of Baghdad, Iraq on Tuesday, Sept. 11, 2007. The United Nations' refugee agency estimates that about 2,000 Iraqis leave their homes every day due to violence and economic uncertainty resulting from the four-year conflict. (AP Photo/Alaa al-Marjani)

RM2PB4M60–An Iraqi Shiite woman carries a television on her head in a camp outside of Najaf, 160 kilometers (100 miles) south of Baghdad, Iraq on Tuesday, Sept. 11, 2007. The United Nations' refugee agency estimates that about 2,000 Iraqis leave their homes every day due to violence and economic uncertainty resulting from the four-year conflict. (AP Photo/Alaa al-Marjani)

In this Wednesday July 9, 2014 photo, an Iraqi refugee woman from Mosul sits at a temporary camp for refugees who fled from Mosul and other towns outside Irbil, northern Iraq, nearly a month after Islamic militants took over the country's second largest city. The lightning sweep by the insurgents over much of northern and western Iraq the past month has dramatically hiked tensions between the country's Shiite majority and Sunni minority. At the same time, splits have grown between the Shiite-led government in Baghdad and the Kurdish autonomy region in the north. (AP Photo)

RM2N4EMXC–In this Wednesday July 9, 2014 photo, an Iraqi refugee woman from Mosul sits at a temporary camp for refugees who fled from Mosul and other towns outside Irbil, northern Iraq, nearly a month after Islamic militants took over the country's second largest city. The lightning sweep by the insurgents over much of northern and western Iraq the past month has dramatically hiked tensions between the country's Shiite majority and Sunni minority. At the same time, splits have grown between the Shiite-led government in Baghdad and the Kurdish autonomy region in the north. (AP Photo)

An Iraqi woman, a refugee from Baghdad, walks next to a U.S. Marine from Lima Company, a part of the 7th Marine Regiment, on the road south-east of the Iraqi capital April 5, 2003. U.S. Marine commander said on Saturday American troops would use overwhelming force to crush any resistance if ordered to storm Baghdad and that the battle would cost many civilian lives.

RM2D3C77K–An Iraqi woman, a refugee from Baghdad, walks next to a U.S. Marine from Lima Company, a part of the 7th Marine Regiment, on the road south-east of the Iraqi capital April 5, 2003. U.S. Marine commander said on Saturday American troops would use overwhelming force to crush any resistance if ordered to storm Baghdad and that the battle would cost many civilian lives.

An Iraqi refugee woman from Mosul sits outside her family's tent at Khazir refugee camp outside Irbil, 217 miles (350 kilometers) north of Baghdad, Iraq, Friday, June 13, 2014. The Islamic State of Iraq and the Levant, the al-Qaida breakaway group, on Monday and Tuesday took over much of Mosul in Iraq and then swept into the city of Tikrit further south. An estimated half a million residents fled Mosul, the economically important city. (AP Photo)

RM2P4D9H9–An Iraqi refugee woman from Mosul sits outside her family's tent at Khazir refugee camp outside Irbil, 217 miles (350 kilometers) north of Baghdad, Iraq, Friday, June 13, 2014. The Islamic State of Iraq and the Levant, the al-Qaida breakaway group, on Monday and Tuesday took over much of Mosul in Iraq and then swept into the city of Tikrit further south. An estimated half a million residents fled Mosul, the economically important city. (AP Photo)

An Iraqi woman carries food and plastic bottles in a refugee camp east of Baghdad, Monday, May 21, 2007. The continuing rise of sectarian violence is causing increasing numbers of Iraqis to leave the neighborhoods and towns where they live and seek refuge areas like the 40 families from Baqouba which live in the camp. (AP Photo/Karim Kadim)

RM2PBG28M–An Iraqi woman carries food and plastic bottles in a refugee camp east of Baghdad, Monday, May 21, 2007. The continuing rise of sectarian violence is causing increasing numbers of Iraqis to leave the neighborhoods and towns where they live and seek refuge areas like the 40 families from Baqouba which live in the camp. (AP Photo/Karim Kadim)

Nickolay Mladenov, second from right, the U.N. envoy to Iraq, speaks with an Iraqi woman who fled Mosul at the Khazir refugee camp outside Irbil, 217 miles (350 kilometers) north of Baghdad, Iraq, Saturday, June 14, 2014. Mladenov said a 'political solution' is the only answer to the ongoing conflict in Iraq, during a trip to the country to monitor the humanitarian crisis. His comments on Saturday came as fighters from the al-Qaida splinter group, drawing support from former Saddam Hussein-era figures and other disaffected Sunnis, have made dramatic gains in the Sunni heartland north of Baghda

RM2N4KGBA–Nickolay Mladenov, second from right, the U.N. envoy to Iraq, speaks with an Iraqi woman who fled Mosul at the Khazir refugee camp outside Irbil, 217 miles (350 kilometers) north of Baghdad, Iraq, Saturday, June 14, 2014. Mladenov said a 'political solution' is the only answer to the ongoing conflict in Iraq, during a trip to the country to monitor the humanitarian crisis. His comments on Saturday came as fighters from the al-Qaida splinter group, drawing support from former Saddam Hussein-era figures and other disaffected Sunnis, have made dramatic gains in the Sunni heartland north of Baghda

An Iraqi Shiite woman of those who fled from Mosul, Iraq, and other towns after the advance of Islamic militants walks at a refugee camp in Baghdad's southeast suburb of Nahrawan, Iraq, Sunday, Aug. 17, 2014. (AP Photo/ Karim Kadim)

RM2N48EDM–An Iraqi Shiite woman of those who fled from Mosul, Iraq, and other towns after the advance of Islamic militants walks at a refugee camp in Baghdad's southeast suburb of Nahrawan, Iraq, Sunday, Aug. 17, 2014. (AP Photo/ Karim Kadim)

RM2D3KNGP–An Iraqi woman, a refugee from the Baghdad area, covers her baby against the heat on the road south-east of Baghdad on April 5, 2003. U.S. tanks which pushed into southern Baghdad on Saturday rumbled back down the main southern highway from the city after linking up with U.S. forces at the airport and carrying out a reconnaissance mission. PP03040014 REUTERS/Oleg Popov

An Iraqi woman, a refugee from the Baghdad area, carries a small bag on her head as she walks on the road southeast of the Iraqi capital Baghdad on April 6, 2003. A heavy artillery barrage thundered on Sunday from Daura, a southeastern suburb of Baghdad which contains an oil refinery, a Reuters witness said. Planes roared over the Iraqi capital as the sound of artillery fire echoed from Daura, which includes an electricity power grid as well as the oil refinery, Reuters correspondent Samia Nakhoul said in central Baghdad. REUTERS/Oleg Popov REUTERS OP/

RM2D4G22T–An Iraqi woman, a refugee from the Baghdad area, carries a small bag on her head as she walks on the road southeast of the Iraqi capital Baghdad on April 6, 2003. A heavy artillery barrage thundered on Sunday from Daura, a southeastern suburb of Baghdad which contains an oil refinery, a Reuters witness said. Planes roared over the Iraqi capital as the sound of artillery fire echoed from Daura, which includes an electricity power grid as well as the oil refinery, Reuters correspondent Samia Nakhoul said in central Baghdad. REUTERS/Oleg Popov REUTERS OP/