How the attack at a Moscow concert hall unfolded

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Timeline: How the attack at a Moscow concert hall unfolded

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Mourning in Moscow for terrorist attack that killed 137

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Moscow mass shooting suspects appear in court

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Death toll climbs as Russia holds day of mourning for terror attack victims

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Pope condemns Moscow concert attack as ‘inhuman actions’

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Death toll rises and new details emerge from Moscow concert hall terror attack

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Putin vows to punish perpetrators after deadly Moscow concert attack

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U.S. warned Russia about a potential terrorist attack in Moscow

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Video inside Moscow concert hall shows terror as gunmen attack

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Dozens of casualties reported after attack on Russian concert hall

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NBC News reports from inside a Moscow polling station as Russian presidential election begins

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President Putin says Russia is ready for a nuclear war

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Funeral for Alexei Navalny draws thousands of Russians

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