On 8 December 2020, the U.S. Embassy in Lisbon issued a Security Alert, which reads in part as follows: “During the holiday season, we encourage U.S. citizens in Portugal to remain vigilant due to ongoing threats posed by transnational terrorist organizations and individuals inspired by violent extremist ideology throughout Europe. Violent extremists continue to focus on locations such as Christmas holiday markets, shopping malls, airports, clubs, restaurants, places of worship, transportation hubs, and other soft targets frequented by tourists.”