Russia’s domestic terrorism threat is serious, sophisticated and complex

The April 3 bombing on the St Petersburg metro was the highest-profile terror attack on Russian soil since a suicide bombing at Moscow’s Domodedovo airport in January 2011. According to Russia’s National Antiterrorism Committee, at least 14 people were killed and 49 injured by an improvised explosive device; further casualties were prevented when a second device was disarmed at another station. Days later, another bomb was found and defused in a residential building.

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