An attack Friday at a gas factory in France that left one person dead and two others wounded is the latest in a string of terror attacks in Europe in recent years. Here are some of the most recent major ones:
March 11, 2004: Bombs on rush-hour trains kill 191 at Madrid's Atocha station in Europe's worst Islamic terror attack.
July 7, 2005: 52 commuters are killed when four al Qaeda-inspired suicide bombers blow themselves up on three London subway trains and a bus.
July 22, 2011: Anti-Muslim extremist Anders Behring Breivik plants a bomb in Oslo then attacks a youth camp on Norway's Utoya island, killing 77 people, many of them teenagers.
March 2012: A gunman claiming links to al Qaeda kills three Jewish schoolchildren, a rabbi and three paratroopers in Toulouse, southern France.
May 22, 2013: Two al Qaeda-inspired extremists run down British soldier Lee Rigby in a London street, then stab and hack him to death.
May 24, 2014: Four people are killed at the Jewish Museum in Brussels by an intruder with a Kalashnikov. The accused is a French former fighter linked to the Islamic State group in Syria.
January 7, 2015: Two al Qaeda-linked gunmen kill 11 people at the Charlie Hebdo satirical magazine in Paris and kill a police officer outside. A total of 17 people and three gunmen die during three days of bloodshed.