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The Moscow terror attack could mark the beginning of an even more brutal phase in Russia’s war in Ukraine — even if Ukraine had nothing to do with it. It's also a sign that ISIS-K is making a global comeback.

This episode was produced by Avishay Artsy and Haleema Shah, edited by Miranda Kennedy, fact-checked by Laura Bullard and Kim Eggleston, engineered by Patrick Boyd, and hosted by Noel King.

Transcript at vox.com/todayexplained

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