British police dog handlers patrol a train station in London in January. Matt Dunham/AP hide caption

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A woman carries a French flag during a ceremony in Paris on Friday honoring those killed in the Nov. 13 attacks. French President Francois Hollande has encouraged the French people to display flags, something they don't often do. Thibault Camus/AP hide caption

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The U.K. coastguard and local boatmen recovered a piece of metal from the sea off the Isles of Scilly in Britain. The debris is likely from the U.S. rocket SpaceX Falcon 9, which blew up after takeoff in June. Handout/Reuters/Landov hide caption

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French President Francois Hollande delivers a speech honoring victims of the Paris attacks during a ceremony at the Invalides in Paris on Friday. The names of each of the 130 people killed in the attacks two weeks ago was read aloud. Francois Mori/AP hide caption

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Russian President Vladimir Putin (right) listens to French President Francois Hollande as they leave their news conference in Moscow on Thursday. Alexander Zemlianichenko/AP hide caption

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Joel Touitou Laloux's family owned Paris' Bataclan theater from 1976 until last year, when the performance hall was sold and he retired to Israel. He's shown here on Nov. 18 at his home in the Mediterranean coastal city of Ashdod in southern Israel. Jack Guez/AFP/Getty Images hide caption

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The closing ceremony of the Second Vatican Council in St. Peter Square on Dec. 9, 1965. Forty bishops pledged to forsake worldly goods, but the agreement was largely ignored. Pope Francis' emphasis on helping the poor has revived talk about the Pact of the Catacombs. Keystone-France/Gamma-Keystone via Getty Images hide caption

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