Beslan school hostage crisis
Radical Islamists from Chechnya and other North Caucasian republics have been held responsible for a number of terrorist attacks throughout Russia, most notably the Russian apartment bombings in 1999, the Moscow theater hostage crisis in 2002, the Beslan school hostage crisis in 2004, the 2010 Moscow Metro bombings and the Domodedovo International Airport bombing in 2011.