ISIS-K, Group Tied to Moscow Attack, Has Grown Bolder and More ViolentISIS-K challenges Taliban in AfghanistanISIS-K expands attacks internationally
Russia Arrests 4 Suspects in Moscow Attack as Death Toll Climbs to 133Russian authorities arrested suspects in Moscow concert fire attack.Putin blamed international terrorism and hinted at Ukrainian involvement.
In First Remarks on Attack, Putin Tries to Link Assailants to UkrainePutin blames Ukraine for concert hall attackAmerican officials skeptical of Putin's accusations