Moscow Terror Attack: Putin Vows To Punish Those Behind Russia Concert Massacre
Moscow Terror Attack: Russia said on Saturday it had arrested all four gunmen suspected of carrying out a shooting massacre in a concert hall near Moscow, and President Vladimir Putin pledged to track down and punish those behind the attack.
Militant Islamist group Islamic State claimed responsibility for Friday's rampage, but there were indications that Russia was pursuing a Ukrainian link, despite emphatic denials from Ukrainian officials that Kyiv had anything to do with it.
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