On 23 November 2021, the U.S. Embassy in Stockholm issued a security alert advising travelers to remain vigilant at Christmas markets, which reads in part as follows: “Location: Sweden

“Event: Reminder to Remain Vigilant We urge all U.S. citizens to remain cautious and to maintain situational awareness when attending large outdoor gatherings such as Christmas markets. Although the atmosphere at these events is festive, they also present a potential target for criminal or terrorist attacks.”