Parallels Many Stories, One World

A Free Syrian Army fighter runs after attacking a tank with a rocket-propelled grenade during fighting in Aleppo, Syria, in September 2012. The rebels say they are willing to take on the Islamic State, but need more weapons. Manu Brabo/AP hide caption

itoggle caption Manu Brabo/AP

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

Abdul-Rahman Kassig, who was formerly known as Peter, is shown with a truck filled with aid supplies for Syrian refugees. The American aid worker was seized by the Islamic State in October 2013 and the group is now threatening to kill him. Courtesy of Kassig Family hide caption

itoggle caption Courtesy of Kassig Family

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Groups of rural and community police arrive in the city of Iguala on Tuesday to help in the search for 43 students who disappeared after a confrontation with local police on Sept. 26. Miguel Tovar/STF/LatinContent/Getty Images hide caption

itoggle caption Miguel Tovar/STF/LatinContent/Getty Images

A Palestinian worker checks a truck loaded with bags of cement as it crosses into southern Gaza from Israel last year. Israel has restricted cement supplies to only specific projects. Said Khatib/AFP/Getty Images hide caption

itoggle caption Said Khatib/AFP/Getty Images

Alleged Islamic State militants stand next to an ISIS flag atop a hill in the Syrian town of Ain al-Arab, called Kobane by the Kurds, as seen from the Turkish-Syrian border in Suruc, Turkey, on Monday. Aris Messinis/AFP/Getty Images hide caption

itoggle caption Aris Messinis/AFP/Getty Images

Displaced demonstrators from the minority Yazidi sect demonstrate outside the United Nations offices in Irbil, Iraq, on Aug. 4 in support of those held captive by the self-proclaimed Islamic State. Azad Lashkari/Reuters/Landov hide caption

itoggle caption Azad Lashkari/Reuters/Landov

Ukrainians pray during a service supporting the self-proclaimed Donetsk People's Republic in front of an occupied administration building in Donetsk, Ukraine. A ceasefire has been shaky and many separatists say their goal is still full independence from Ukraine. Alexander Ermochenko/EPA/LANDOV hide caption

itoggle caption Alexander Ermochenko/EPA/LANDOV

Fighters from the Islamic State group parade down a main road in the northern city of Mosul, Iraq. A Yazidi woman nicknamed Dudu tells the story of how she was kidnapped by ISIS along with her sisters and other women, to be sold and married off. AP Photo hide caption

itoggle caption AP Photo

Fighters from the Islamic State group parade in their northern Syrian stronghold, Raqqa. Uncredited/AP/Raqqa Media Center hide caption

itoggle caption Uncredited/AP/Raqqa Media Center

This still image was made from video released by the U.S. military on Tuesday that shows a building hit by a U.S. airstrike in Tall Al Qitar, Syria. The U.S. is describing the bombing campaign in Syria and Iraq as a counterterrorism operation and not a war. U.S. Central Command/AP hide caption

itoggle caption U.S. Central Command/AP

Islamic State fighters in the northern Iraqi city of Mosul parade through the streets shortly after capturing it in June. U.S. airstrikes have made the group wary and less visible, but the Islamic State still has control of Iraq's second-largest city. STR/AP hide caption

itoggle caption STR/AP

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

Classrooms across Gaza are crowded with as many as 50 or 60 students, principals say, as dozens of school buildings have been destroyed or damaged, or are still housing people who lost their homes. Emily Harris/NPR hide caption

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Nicaragua's Contra rebels in 1990. The U.S. backed the Contras in the 1980s, which led to the ouster of the leftist Sandinista leadership. But the U.S. aid violated American law and contributed to the biggest scandal of President Reagan's administration. Michael Stravato/AP hide caption

itoggle caption Michael Stravato/AP

Robi Damelin, left, is an Israeli whose son was fatally shot by a Palestinian in 2002. Bassam Aramin is a Palestinian whose daughter was shot dead by Israeli police in 2007. They belong to the Parents Circle, a group of mothers and fathers who have lost children and seek an end to the Israeli-Palestinian conflict. Ryan Kellman/NPR hide caption

itoggle caption Ryan Kellman/NPR

This image, posted on a militant website, shows an Islamic State fighter waving a flag from a captured government fighter jet in Raqqa, Syria. The Islamic State captured the city in northeastern Syria last year and it has effectively served as its capital. Uncredited/AP hide caption

itoggle caption Uncredited/AP

People wait for a bus in the empty streets of Donetsk on Tuesday. The city's population, which was 900,000, is now down to around 300,000. It is beginning to return to normal following a cease-fire, which was signed last week and is mostly holding. But residents are divided over the region's future. Spencer Platt/Getty Images hide caption

itoggle caption Spencer Platt/Getty Images