1 September – 3 September 2004
Around thirty-two militants from the Riyad-us Saliheen Brigade seized a school in Beslan, North Ossetia, on 1 September 2004, holding more than 1,100 hostages, including 777 children, in the gymnasium for fifty-two hours. The siege collapsed into chaos on 3 September after explosions of disputed origin brought down the gymnasium roof, and Russian special forces stormed the building with tanks and thermobaric weapons in a roughly twelve-hour battle that left 334 hostages dead, 186 of them children. Russian authorities faced sustained criticism for understating hostage numbers to the captors, allowing a premature assault despite ongoing negotiation, and responding with force that many observers judged disproportionate to the goal of protecting the hostages inside.