LONDON - June 2017: Eight people were killed and more than 48 injured when three men drove a van into pedestrians on London Bridge before stabbing people at bars and restaurants in nearby Borough Market.
MANCHESTER - May 2017: In one of the worst terror attacks that hit the United Kingdom, a suicide bomber killed at least 22 people , including children and teenagers, at an Ariana Grande concert in Manchester. The Islamic State extremist militia claimed responsibility for the deadly attack.
PARIS - April 2017: A shooting attack on the Champs-Elysees left one police officer dead and two others injured . The attacker was shot dead. Amaq, a news agency affiliated with the Islamic State organization, claims that the terrorist was a member of the group.
STOCKHOLM - April 2017: A hijacked lorry ploughed through a pedestrian zone in central Stockholm and then crashed into a department store on Friday, killing five people. Fifteen people were also injured in this attack.
LONDON - March 2017: Five people were killed and at least 30 injured in a terrorist attack near the British parliament in central London , including a police officer and one attacker. The Islamic State extremist group claims responsibility for the terrorist attack.
PARIS - February/March 2017: Soldiers managed to stop an attempted attack at Paris Orly airport by shooting a man who tried to take a patrolling soldier's gun. In early February, a soldier on patrol shot an Egyptian assailant wielding a machete.
BERLIN - December 2016: Germany's capital was the scene of an attack which killed 12 people when a supporter of Islamic State steered a truck into a crowded Christmas market. The suspect, a 24-year-old Tunisian man, was shot by police near Milan a few days later.
NICE - July 2016: At least 86 people died when an attacker drove a truck into the crowded beach-front Promenade des Anglais. Islamic State claimed responsibility for the attack.
BRUSSELS - March 2016: Islamist attackers set off several bombs at the airport of the Belgian capital and in a metro station, killing 32 people.
ISTANBUL - January 2016: An Islamic State suicide attacker killed 12 Germans when he blew himself up in the middle of a tourist group near the Hagia Sophia and the Blue Mosque.
PARIS - November 2015: In a coordinated series of attacks on the Stade de France football stadium, several restaurants and the Bataclan music venue, Islamic State supporters killed 130 people and injured hundreds more.
COPENHAGEN - February 2015: A 22-year-old opened fire on a cafe in the Danish capital, killing one person. He then shot and killed a man guarding a synagogue before being shot himself by police.
PARIS - January 2015: Seventeen people died in an attack on the offices of Charlie Hebdo magazine and a kosher supermarket. Both attackers were later killed by police. Terror organisation Al-Qaeda in the Arabian Peninsula (AQAP) claimed responsibility.
BRUSSELS - May 2014: A French Islamist was arrested after shooting four people in the Jewish Museum of Belgium. The gunman was a self-proclaimed jihadist and had previously fought in Syria.
LONDON - July 2005: Four British Muslims set off bombs on the London Underground rail system and on a bus. The attacks killed 56 people and injured around 700.
MADRID - March 2004: Around 191 people died and 1500 were injured when coordinated bombs went off on Spanish commuter trains.