:: May 22 2017 - Manchester
Suicide bomber Salman Abedi detonated a bomb at Manchester Arena as fans were leaving an Ariana Grande concert, killing himself and 22 others.
:: April 7 2017 - Stockholm
A stolen truck was rammed into a crowd in the Swedish capital, killing four people and wounding 15 others. A 39-year-old Uzbek man confessed to the crime, his lawyer said. Police said Rakhmat Akilov was known to have been sympathetic to extremist organisations. Briton Chris Bevington, 41, who lived in Stockholm with his family and worked as a director with music streaming service Spotify, was among the victims.
:: March 22 2017 - London
Khalid Masood drove a hired car over Westminster Bridge, near the Houses of Parliament, mounted the pavement and hit pedestrians before crashing into railings outside the Palace of Westminster. He stabbed Pc Keith Palmer to death and also killed US tourist Kurt Cochran, Romanian tourist Andreea Cristea, 31, plus Britons Aysha Frade, 44, and 75-year-old Leslie Rhodes. Masood was shot dead by police.
:: March 18 2017 - Paris
A suspected Islamic extremist attacked a French soldier at Orly airport - shouting that he wanted to kill and die for Allah - and wrested away her assault rifle. Two colleagues on patrol at the airport shot and killed the man before he could fire the military-grade weapon in the busy terminal.
:: February 3 2017 - Paris
A machete-wielding man shouting "Allahu akbar" attacked French soldiers guarding the sprawling Louvre museum building. The suspect, who was shot four times, was later named by officials as Egyptian Abdullah Reda Refaie al-Hamahmy, 28.
:: December 19 2016 - Berlin
A truck ploughed into a crowded Christmas market in central Berlin, killing 12 people and injuring 56 others.