Russia observes national day of mourning after Moscow concert hall massacre
Russia will observe a national day of mourning on Sunday after a massacre in a Moscow concert hall that killed more than 130 people, the deadliest attack in Europe to have been claimed by the Islamic State (IS) group.
Russia will observe a national day of mourning on Sunday after a massacre in a Moscow concert hall that killed more than 130 people, the deadliest attack in Europe to have been claimed by the Islamic State (IS) group.
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