An apparent terrorist attack Wednesday outside British Parliament came one year after suicide bombings at the Brussels airport and a Metro station in Belgium. Islamic State claimed responsibility for the Belgium assaults on March 22, 2016, which left 32 people dead and more than 300 injured.
The London attack, which left several people dead and many more injured, was the latest in a series of prominent assaults in European cities in recent years. In addition to London and Brussels, Paris, Berlin and Nice have been among the targets.
Here are summaries of some of the other attacks:
Dec. 19, 2016 -- Berlin