Timeline of deadly attacks in Western nations since Sept. 11, 2001 in which perpetrators were believed to have been motivated by violent jihadi extremism.

Madrid, March 11, 2004 – Train bombings kill more than 190 people and wound 1,800.

London, July 7, 2005 – Multiple bombings in London Underground. 53 killed by four suicide bombers. Nearly 700 injured.

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Glasgow, June 30, 2007 – Glasgow International Airport attack. Five injured

Fort Hood, Tex., Nov. 5, 2009 – Fort Hood shooting, near Killeen, Tex. 13 dead, 33 injured.

Stockholm, Dec. 10, 2010 – Stockholm bombing. 1 dead, 2 injured.

Frankfurt, Germany, March 2, 2011 – 2011 Frankfurt Airport shooting. 2 dead, 2 injured.

France, March 20, 2012 – Shootings in Toulouse and Montauban. 7 dead, 5 injured.

Boston Marathon bombings, April 15, 2013 – Two brothers, Tamerlan and Dzhokhar Tsarnev, planted two bombs near the finish line of the Boston Marathon. The blast killed three and injured more than 180 others.

London, May 22, 2013 – Two men with cleavers kill British soldier Lee Rigby outside Woolwich barracks in southeast London.

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Brussels, May 24, 2014 – Jewish Museum of Belgium shooting. Gunman opens fire at the Jewish Museum, killing 4 people.

Saint-Jean-sur-Richelieu, Quebec, Oct. 20, 2014 – Lone attacker used his car to run over two Canadian Forces soldiers. 1 killed, 1 injured.

Ottawa, Oct. 22, 2014 – Lone attacker kills a soldier guarding the National War Memorial and attacks Parliament Hill. 1 killed, 3 injured.

Sydney, Australia, Dec. 15, 2014 – Hostages taken at a coffee shop in the financial district. 2 dead, 4 injured.

France, Jan. 7-9, 2015 – A series of attacks in and around Paris kills 18 people and leaves 22 other people injured.

Copenhagen, Feb. 14, 2015 – A gunman opens fire at the Krudttoenden café and later at the Great Synagogue, killing two civilians and injuring five others

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Sources: Globe wires, BBC, CNN