Two US students go on trial in Italy on Wednesday over the fatal stabbing last year of a policeman in Rome during a botched drug bust.
Police shot a man in south London on Sunday after several people were believed to have been stabbed in what police described as a terrorism-related incident.
Two people including a schoolgirl were stabbed to death and more than a dozen injured in Japan on Tuesday in a rampage that targeted children as they waited for a bus.
A woman was injured Tuesday in a stabbing attack in the southern Swedish city of Helsingborg, police said.
Thousands of Poles gathered in the Baltic port city of Gdansk on Saturday to bid an emotional farewell to murdered liberal mayor Pawel Adamowicz, whose public stabbing has raised questions about hate speech in politics in the country.
Pawel Adamowicz, the liberal mayor of the Polish city of Gdansk, died on Monday of his wounds a day after being stabbed on stage at a charity event.
The victim, Ari Fuld, 45, was well-known amongst settlers as a pro-Israel advocate. According to his Twitter account, he had planned a lecture tour in the United States in November.
Police said one man had suffered minor injuries after reports of a stabbing in the town centre.
Brazil's right-wing presidential frontrunner Jair Bolsonaro was stabbed and seriously injured while campaigning Thursday, with police saying the suspect claimed to be acting on orders from God.