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A picture taken on October 17, 2016 from the top of Mount al-Shourah shows Iraqi forces watching smoke billowing as they deploy in the area, some 45 kms south of Mosul, while advancing towards the city to retake it from the Islamic State (IS) group jihadists. Some 30,000 federal forces are leading the offensive, backed by air and ground support from a 60-nation US-led coalition, in what is expected to be a long and difficult assault on IS's last major Iraqi stronghold.

A picture taken from the top of Mount Zardak, about 25 kilometers east of Mosul, shows smoke billowing on the outskirts of the Iraqi city of Nineveh, during an operation against Islamic State (IS) group jihadists, on October 17, 2016. Thousands of Iraq's Kurdish peshmerga forces advanced on jihadist-held villages east of Mosul as part of a broad operation to retake the city from the Islamic State group.

Iraqi Kurdish Peshmerga fighters stand next to a fire as they gather on the top of Mount Zardak, about 25 kilometers east of Mosul, on early October 17, 2016. Thousands of Iraq's Kurdish peshmerga forces advanced on jihadist-held villages east of Mosul as part of a broad operation to retake the city from the Islamic State group.

This photo taken on Sunday, Oct. 16, 2016 and released on Tuesday, Oct. 18, 2016 by the French Army Communications Audiovisual office (ECPAD) shows French army Rafale fighter jets taking off from the deck of France's aircraft carrier Charles De Gaulle, in the Mediterranean sea. Seven French Rafale jets, from the Air Force and the Navy, carried out airstrikes south of Mosul overnight Oct. 15-16 with SCALP missiles that destroyed a factory making IEDs (improvised explosive devices).

A peshmerga fighter looks out of the entrance of an underground tunnel built by Islamic State fighters, Tuesday, Oct. 18, 2016. The Kurdish forces found the tunnel in the town of Badana that was liberated from the Islamic State group on Monday. The fighters built tunnels under residential areas so they could move without being seen from above to avoid airstrikes.

Supporters of Shiite cleric Muqtada al-Sadr wave national flags during a demonstration in front of the Turkish Embassy calling for the immediate withdrawal of Turkish troops from northern Iraq, in Baghdad, Iraq, Tuesday, Oct. 18, 2016. Thousands of followers of al-Sadr are demanding the withdrawal of Turkish troops from a base near the northern city of Mosul. Turkey says the troops are training Iraqi fighters to help retake Mosul from the Islamic State group, and that they are there with the permission of the Iraqi government. Baghdad denies it granted permission and has ordered them to withdraw -- a call Ankara has ignored.

The Commander of the Joint Military Operation Commander, Army Lt. Gen. Talib Shaghati, walks in the town of Khazer, Iraq, Monday, Oct. 17, 2016. He praised the role of the U.S.-led International Coalition as "very important" through carrying out airstrikes and sharing intelligence. Citing intelligence information, he claimed some IS militants were fleeing Mosul to Syria along with their families.

Iraqi Kurdish Peshmerga fighters fire a multiple rocket launcher from the top of Mount Zardak, about 25 kilometers east of Mosul, as they take part in an operation against Islamic State (IS) group jihadists, on October 17, 2016. Thousands of Iraq's Kurdish peshmerga forces advanced on jihadist-held villages east of Mosul as part of a broad operation to retake the city from the Islamic State group.

Iraqi forces deploy on October 17, 2016 in the area of al-Shurah, some 45 kms south of Mosul, as they advance towards the city to retake it from the Islamic State (IS) group jihadists. Some 30,000 federal forces are leading the offensive, backed by air and ground support from a 60-nation US-led coalition, in what is expected to be a long and difficult assault on IS's last major Iraqi stronghold.

A woman poses at a refugee camp housing Iraqi families who fled fighting in the Mosul area on October 17, 2016 in the northeastern town of al-Hol in Syria's Hasakeh province. The battle to retake the Iraqi city of Mosul from jihadists could unleash a massive humanitarian crisis, potentially pushing hundreds of thousands to flee their homes as winter sets in.

Kurdish security forces take up a position as they fight overlooking the Islamic State-controlled in villages surrounding Mosul, in Khazer, about 30 kilometers (19 miles) east of Mosul, Iraq, Monday, Oct. 17, 2016. Iraqi government and Kurdish forces, backed by U.S.-led coalition air and ground support, launched coordinated military operations early on Monday as the long-awaited fight to wrest the northern city of Mosul from Islamic State fighters got underway.

Iraqi Kurdish Peshmerga fighters deploy on the top of Mount Zardak, about 25 kilometers east of Mosul, as they take part in an operation against Islamic State (IS) group jihadists, on October 17, 2016. Thousands of Iraq's Kurdish peshmerga forces advanced on jihadist-held villages east of Mosul as part of a broad operation to retake the city from the Islamic State group.

Iraqi forces deploy on October 17, 2016 in the area of al-Shurah, some 45 kms south of Mosul, as they advance towards the city to retake it from the Islamic State (IS) group jihadists. Some 30,000 federal forces are leading the offensive, backed by air and ground support from a 60-nation US-led coalition, in what is expected to be a long and difficult assault on IS's last major Iraqi stronghold.

A picture taken from the top of Mount Zardak, about 25 kilometers east of Mosul, shows smoke billowing in the Iraqi city of Nineveh, during an operation against Islamic State (IS) group jihadists, on October 17, 2016. Thousands of Iraq's Kurdish peshmerga forces advanced on jihadist-held villages east of Mosul as part of a broad operation to retake the city from the Islamic State group.

Iraqi forces deploy on October 17, 2016 in the area of al-Shurah, some 45 kms south of Mosul, as they advance towards the city to retake it from the Islamic State (IS) group jihadists. Some 30,000 federal forces are leading the offensive, backed by air and ground support from a 60-nation US-led coalition, in what is expected to be a long and difficult assault on IS's last major Iraqi stronghold.

A woman walks with children at a refugee camp housing Iraqi families who fled fighting in the Mosul area on October 17, 2016 in the northeastern town of al-Hol in Syria's Hasakeh province. The battle to retake the Iraqi city of Mosul from jihadists could unleash a massive humanitarian crisis, potentially pushing hundreds of thousands to flee their homes as winter sets in.

Iraqi forces deploy on October 17, 2016 in the area of al-Shurah, some 45 kms south of Mosul, as they advance towards the city to retake it from the Islamic State (IS) group jihadists. Some 30,000 federal forces are leading the offensive, backed by air and ground support from a 60-nation US-led coalition, in what is expected to be a long and difficult assault on IS's last major Iraqi stronghold.

Iraqi forces gather in the area of al-Shourah, some 45 kms south of Mosul, as they advance towards the city to retake it from the Islamic State (IS) group jihadists, on October 17, 2016. Iraqi Prime Minister Haider al-Abadi announced earlier in the day that the long-awaited operation to recapture Mosul was under way.

Iraqi forces deploy on October 17, 2016 in the area of al-Shurah, some 45 kms south of Mosul, as they advance towards the city to retake it from the Islamic State (IS) group jihadists. Some 30,000 federal forces are leading the offensive, backed by air and ground support from a 60-nation US-led coalition, in what is expected to be a long and difficult assault on IS's last major Iraqi stronghold.