Terror attack in Moscow concert hall by Islamic State

A terror attack at a Moscow concert hall left at least 40 dead, over 100 injured, and a massive blaze. The Islamic State claimed responsibility. Security has been heightened in Moscow. The Kremlin is investigating the attack as terrorism. President Putin was informed minutes after the assailants struck. The attack occurred days after Putin's electoral victory. The deadliest attack in Russia in years occurred as the war in Ukraine continued.