More than 654 people have been killed in Moscow bombings and other attacks over the past 15 years. Here's a timeline, beginning with the Jan. 24, 2011, explosion at Domodedovo airport.
Jan. 24, 2011 — Bombing, Domodedovo airport international arrivals hall: at least 36 people killed; around 180 injured. Two weeks later Chechen warlord Doku Umarov said he ordered the attack.
March 29, 2010 — Double suicide bombings, Moscow subway, during rush hour: 40 killed; more than 100 injured. Umarov claimed responsibility for the attack.
Nov. 27, 2009 — Bombing, high-speed Moscow-to-St.Petersburg train (the Nevsky Express): 26 dead; 100 injured. 700 people were on the train. Umarov's group said he ordered this attack.
Aug. 13, 2007 — Bombing, the Nevsky Express: 60 injured.
Aug. 31, 2004 — Suicide bomber blows herself up outside Rizhskaya subway station: 10 killed; 50 injured. The Islambuli brigades, an Islamist extremist group, claimed responsibility.
Aug. 24, 2004 — Two female suicide bombers blow themselves up aboard two Russian Tupolev jets that took off from Domodedovo airport: 90 killed.
Feb. 6, 2004 — Suicide bomber, Moscow subway train, rush hour: 41 killed; 134 injured.
Dec. 9, 2003 — Two female suicide bombers, National hotel. 6 killed; 13 injured. Officials said one of the bombs detonated prematurely.
July 5, 2003 — Two female suicide bombers, open-air rock music festival, Tushino airfield: 16 killed; 60 injured.
Oct. 23-26, 2002 — Hostage-taking, Dubrovka theatre during a performance of Nord-Ost. Chechen rebels took about 850 people hostage. After two days, Russian special forces stormed the theatre: 129 hostages and 41 Chechen fighters were killed, mostly from the effects of a narcotic gas Russian forces used to incapacitate the rebels.
Feb. 5, 2001 — Bombing, Moscow subway, Belorusskaya station: 20 injured.
Aug. 8, 2000 — Bombing, pedestrian tunnel leading to Tverskaya metro station: 13 killed; 90 injured.
Sept. 13, 1999 — Bombing, eight-storey apartment building: 119 killed; 200 injured.
Sept. 9, 1999 — Bombing, nine-storey apartment building: 94 killed; 249 injured. The Russian government blamed Chechen rebels for the Sept. 9 and Sept. 13 attacks, as well as for bombings at two other apartment buildings elswhere in Russia. Others said the government orchestrated the bombings as a pretext for reigniting the war in Chechnya. Russian troops were ordered back to Chechnya at the end of the month.
Aug. 31, 1999 — Bombing, underground Manezh shopping centre, close to the Kremlin: 1 killed; 40 injured.
April 26, 1999 — Bombing, Intourist hotel overlooking Red Square: at least 11 injured.
Jan. 1, 1998 — Bombing, Moscow subway, Tretyakovskaya station. three injured. No one claimed responsibility.
June 11, 1996 — Bombing, Moscow subway, Serpukhovskaya line: four killed; 12 injured. Officials blamed Chechen separatists, but no one claimed responsibility.