A Russian warplane taxies at Hemeimeem airbase in Syria. Advocates say a no-fly zone would keep Syrian aircraft from attacking anti-government rebels and endangering civilians, which might allow Syrians to feel safe enough to stay put. Vladimir Isachenkov/AP hide caption

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Russian President Vladimir Putin is shown during a meeting with Jordan's King Abdullah II in Sochi, Russia, on Tuesday. Putin said Turkey's downing of a Russian warplane was "a stab in the back." Maxim Shipenkov/AFP/Getty Images hide caption

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A new synagogue went up almost overnight as the older one was being taken down. They are only a block apart, but the new one is on land that is not part of this lawsuit. Emily Harris/NPR hide caption

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After their villages were overrun by ISIS last year, hundreds of Yazidis sought safety on Mount Sinjar, a place they consider miraculous. Many families, including this one, refuse to leave the mountain. Alison Meuse/NPR hide caption

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