SANLIURFA, TURKEY - SEPTEMBER 19: Syrians gathering on Turkish-Syrian border for the last two days after fleeing attacks from Islamic State and the Levant (ISIL) in the Ar-Raqqah Governorate of Syria, fill bottles at a water tap as they cross the border into Suruc district of Turkey's Sanliurfa province on September 19, 2014. Esber Ayaydin / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 19: Scores of Syrians gathering on Turkish-Syrian border for the last two days after fleeing attacks from Islamic State and the Levant (ISIL) in the Ar-Raqqah Governorate of Syria, cross the border into Suruc district of Turkey's Sanliurfa province on September 19, 2014. Esber Ayaydin / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 19: Scores of Syrians gathering on Turkish-Syrian border for the last two days after fleeing attacks from Islamic State and the Levant (ISIL) in the Ar-Raqqah Governorate of Syria, cross the border into Suruc district of Turkey's Sanliurfa province on September 19, 2014. Esber Ayaydin / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 19: A Syrian boy drinks water as he and other Syrians gathering on Turkish-Syrian border for the last two days after fleeing attacks from Islamic State and the Levant (ISIL) in the Ar-Raqqah Governorate of Syria, cross the border into Suruc district of Turkey's Sanliurfa province on September 19, 2014. Esber Ayaydin / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 19: A Syrian woman drinks water as she and other Syrians gathering on Turkish-Syrian border for the last two days after fleeing attacks from Islamic State and the Levant (ISIL) in the Ar-Raqqah Governorate of Syria, cross the border into Suruc district of Turkey's Sanliurfa province on September 19, 2014. Esber Ayaydin / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 18: Syrians fleeing from clashes between the Islamic State of Iraq and Levant (ISIL) militants and Democratic Union Party (PYD) forces in the Ar-Raqqah Governorate of Syria, wait at the Turkish-Syrian border to cross into Turkey on September 18, 2014 near Turkey's Sanliurfa province. Halil Fidan / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 18: Syrians fleeing from clashes between the Islamic State of Iraq and Levant (ISIL) militants and Democratic Union Party (PYD) forces in the Ar-Raqqah Governorate of Syria, wait at the Turkish-Syrian border to cross into Turkey on September 18, 2014 near Turkey's Sanliurfa province. Halil Fidan / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 18: Syrians fleeing from clashes between the Islamic State of Iraq and Levant (ISIL) militants and Democratic Union Party (PYD) forces in the Ar-Raqqah Governorate of Syria, wait at the Turkish-Syrian border to cross into Turkey on September 18, 2014 near Turkey's Sanliurfa province. Halil Fidan / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 19: Scores of Syrians gathering on Turkish-Syrian border for the last two days after fleeing attacks from Islamic State and the Levant (ISIL) in the Ar-Raqqah Governorate of Syria, cross the border into Suruc district of Turkey's Sanliurfa province on September 19, 2014. Halil Fidan / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 19: Syrians gathering on Turkish-Syrian border for the last two days after fleeing attacks from Islamic State and the Levant (ISIL) in the Ar-Raqqah Governorate of Syria, wait to cross the border into Suruc district of Turkey's Sanliurfa province on September 19, 2014. Esber Ayaydin / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 19: Scores of Syrians gathering on Turkish-Syrian border for the last two days after fleeing attacks from Islamic State and the Levant (ISIL) in the Ar-Raqqah Governorate of Syria, cross the border into Suruc district of Turkey's Sanliurfa province on September 19, 2014. Halil Fidan / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 19: Turkish citizens distribute food supplies and water to Syrians gathering on Turkish-Syrian border for the last two days after fleeing attacks from Islamic State and the Levant (ISIL) in the Ar-Raqqah Governorate of Syria, as they wait to cross the border into Suruc district of Turkey's Sanliurfa province on September 19, 2014. Esber Ayaydin / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 19: A Turkish man distributes food supplies to Syrians gathering on Turkish-Syrian border for the last two days after fleeing attacks from Islamic State and the Levant (ISIL) in the Ar-Raqqah Governorate of Syria, as they wait to cross the border into Suruc district of Turkey's Sanliurfa province on September 19, 2014. Esber Ayaydin / Anadolu Agency

SANLIURFA, TURKEY - SEPTEMBER 19: Scores of Syrians gathering on Turkish-Syrian border for the last two days after fleeing attacks from Islamic State and the Levant (ISIL) in the Ar-Raqqah Governorate of Syria, cross the border into Suruc district of Turkey's Sanliurfa province on September 19, 2014. Halil Fidan / Anadolu Agency