Thick smoke rises following an airstrike by the U.S.-led coalition in Kobani, Syria, while fighting continued between Syrian Kurds and the militants of the self-proclaimed Islamic State, as seen from Mursitpinar on the outskirts of Suruc, at the Turkey-Syria border on Wednesday. Lefteris Pitarakis/AP hide caption

itoggle caption Lefteris Pitarakis/AP

A black flag belonging to the so-called Islamic State is seen in the Syrian town of Kobani on Thursday, as seen from the Turkey-Syria border near the southeastern town of Suruc. Umit Bektas/Reuters/Landov hide caption

itoggle caption Umit Bektas/Reuters/Landov

Smoke rises from the Syrian town of Kobani, seen from near the Mursitpinar border crossing on the Turkish-Syrian border in the southeastern town of Suruc, Sanliurfa province, on Friday. Murad Sezer/Reuters/Landov hide caption

itoggle caption Murad Sezer/Reuters/Landov

A Kurdish peshmerga soldier who was wounded Sept. 30 in fierce battles in nearby Nineveh province with Islamic State group militants is brought to the Zakho Emergency Hospital in Dahuk, Iraq. Hadi Mizban/The Associated Press hide caption

itoggle caption Hadi Mizban/The Associated Press

Iraqi Kurdish peshmerga fighters take up positions around the town of Gwer in northern Iraq on Sept. 18. The Kurdish militia is aligned with the U.S. in the battle against the Islamic State. Mohamed Messara/EPA/Landov hide caption

itoggle caption Mohamed Messara/EPA/Landov

Syrian Kurds with their livestock wait behind a border fence near the southeastern town of Suruc in Sanliurfa province on Monday. Some 100,000 Kurds have fled from Syria into Turkey amid intense fighting between peshmerga forces and ISIS. Murad Sezer/Reuters/Landov hide caption

itoggle caption Murad Sezer/Reuters/Landov

Prime Minister Ahmet Davutoglu, center, poses with dozens of freed Turkish hostages at the Esenboga Airport in Ankara Saturday. The group was held by militants in northern Iraq for more than three months. Adem Altan/AFP/Getty Images hide caption

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Smoke rises during airstrikes targeting Islamic State militants at the Mosul Dam outside Mosul, Iraq, on Monday. Kurdish forces say they have retaken the dam, but the militants insist they still have control. Khalid Mohammed/AP hide caption

itoggle caption Khalid Mohammed/AP

Iraqi children from the Yazidi community wave to Kurdish peshmerga forces near Dohuk, the Kurdish region of autonomous Kurdistan in Iraq. The children fled with their families from their hometown, which was attacked by Sunni militants from the Islamic State. Ahmad Al-Rubaye/AFP/Getty Images hide caption

itoggle caption Ahmad Al-Rubaye/AFP/Getty Images

U.S. soldiers carry Iraqi Kurdish children into the Zakho refugee camp in 1991. The U.S. military provided humanitarian relief to Iraqi Kurdish families fleeing Saddam Hussein's army. The rescue operation announced Thursday by President Obama is taking place in the same region. Joel Robine/AFP/Getty Images hide caption

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Brig. Gen. Mohammad Ali Mughdeed talks to the men he commands to protect the Mosul dam, a critical piece of infrastructure that supplies water and electricity. The dam recently fell to the Islamic State in Iraq, but Kurdish forces say they've retaken it, a claim that could not be verified. Alice Fordham/NPR hide caption

itoggle caption Alice Fordham/NPR

A tanker carrying crude oil from Iraq's Kurdish region anchors near Ashkelon, Israel. It's believed the oil has been off-loaded into Israel. The U.S. and Baghdad oppose the Kurdish export of oil from the autonomous northern region. David Buimovitch/AFP/Getty Images hide caption

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A member of the Kurdish security forces stand guard atop a armored vehicle at Taza district, south of the oil-rich city of Kirkuk, Iraq, Friday, June 20, 2014. Emad Matti/AP hide caption

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The Kurdish areas of northern Iraq have remained peaceful despite the recent surge in fighting. Here, a member of the Kurdish peshmerga forces directs traffic at a checkpoint in Kalak, in northern Iraq. Dan Kitwood/Getty Images hide caption

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ISIS militants at al-Sharqat base north of Tikrit, Iraq. The al-Qaida-linked group has captured Mosul as well as Tikrit. This image came from a video posted by IraqiRevolution, a group that supports ISIS. AP hide caption

itoggle caption AP