An Iraqi child who fled fighting between the so-called Islamic State and Kurdish peshmerga is among the some 3,000 people living at the Baharka camp, near Irbil, the capital of the Kurdish autonomous region in northern Iraq, on Jan. 16. Safin Hamed/AFP/Getty Images hide caption

itoggle caption Safin Hamed/AFP/Getty Images

Training at a new camp near the front line, a mix of Arabs and Kurds prepare for an assault on Mosul in upcoming months. The men will wear balaclavas to conceal their identities while they fight, because they have family in Mosul and don't want to put their relatives at risk. Ari Shapiro/NPR hide caption

itoggle caption Ari Shapiro/NPR

Iraq is preparing to take back Mosul, a senior U.S. military official says. Earlier this month, government-backed Sunni Arab tribesmen who've been training to fight ISIS marched northeast of Mosul, in northern Iraq. Yaser Jawad/Xinhua /Landov hide caption

itoggle caption Yaser Jawad/Xinhua /Landov

Iranian Jewish men read from the Torah scroll during morning prayers at Youssef Abad Synagogue in Tehran in 2013. Behrouz Mehri/AFP/Getty Images hide caption

itoggle caption Behrouz Mehri/AFP/Getty Images

Former Florida Gov. Jeb Bush answers questions Wednesday after speaking to the Chicago Council on Global Affairs. The likely 2016 presidential candidate says he will be guided by his own thinking and experiences when it comes to foreign policy questions. M. Spencer Green/AP hide caption

itoggle caption M. Spencer Green/AP

Hedieh Mirahmadi (from left) of the World Organization for Resource Development and Education; Paris Mayor Anne Hidalgo; and Vilvoorde, Belgium, Mayor Hans Bonte greet each other at the White House Summit on Countering Violent Extremism. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP

The heightened partisanship cemented in congressional districts has created havens for both Democrats and Republicans, whose job security now often depends more on pleasing primary voters than on the high-altitude questions facing the nation at large. Mark Wilson/Getty Images hide caption

itoggle caption Mark Wilson/Getty Images

Before ISIS attacked it, the northern Iraqi town of Snuny had a population of nearly 150,000 — a mix of Kurdish Muslims and Yazidis, who belong to a religious ethnic minority in this region. Only about 10,000 have returned after Kurdish fighters reclaimed the city. Ari Shapiro/NPR hide caption

itoggle caption Ari Shapiro/NPR

The temple of Sharfadin in Northern Iraq is 800 years old, and followers of the Yazidi religion consider it one of the most sacred sites in the world. Though ISIS tried to destroy it, a small group of Yazidi fighters kept the shrine standing. Ari Shapiro/NPR hide caption

itoggle caption Ari Shapiro/NPR

An Iraqi man inspects the remains of what are believed to be members of the Yazidi minority, in the northern village of Sinuni on Feb. 3. Safin Hamed/AFP/Getty Images hide caption

itoggle caption Safin Hamed/AFP/Getty Images

President George W. Bush addressed a joint session of Congress shortly after the Sept. 11 attacks, vowing to tap "every resource" to fight terrorism. Two days before the speech, he had signed an Authorization for Use of Military Force passed by Congress. WIN MACNAMEE/AFP/Getty Images hide caption

itoggle caption WIN MACNAMEE/AFP/Getty Images

NBC Nightly News anchor Brian Williams admits that his story of being on a helicopter hit by enemy fire in Iraq in 2003 was untrue and has apologized to troops and viewers. Monica Schipper/Getty Images hide caption

itoggle caption Monica Schipper/Getty Images

NBC's Brian Williams, seen here on Nov. 13, 2014, has apologized for incorrectly saying he was aboard a helicopter in Iraq in 2003 that was hit and forced down by enemy fire. Julio Cortez/AP hide caption

itoggle caption Julio Cortez/AP