US officials are warning Americans in Dublin to remain alert on Friday amid a major security operation around a meeting of European leaders, and the event has already sparked protests in the Irish capital. The warning was issued by the US Embassy in Dublin this week ahead of two summits of European leaders scheduled for Thursday and Friday. While the embassy warned that the biggest disruption was expected on Thursday, security measures were scheduled to remain in place until Friday, with road closures and transport disruptions affecting central Dublin. The embassy said about 50 European leaders were expected to attend the ninth summit of the European Political Community and an informal meeting of the European Council to discuss strategic priorities under Ireland’s EU presidency. Irish police, known as An Garda Síochána, launched what the embassy described as the largest police and security operation in the country’s history. Footage shows what appears to be hundreds of police standing guard in Dublin as protesters flooded the streets, many carrying Palestinian flags. “Expect protests, security cordons and transport disruptions throughout central Dublin from November 10, 2026,” the embassy warned in its statement. US officials are warning Americans in Dublin to remain alert on Friday amid a major security operation around a meeting of European leaders. PA Images via Getty Images Gardai confront pro-Palestinian protesters during a demonstration against the European Political Community summit in Dublin, Ireland, on November 12, 2026. Anadolu via Getty Images The alert covered several prominent locations in central Dublin, including the Dublin Convention Centre. Dublin Castle and the National Gallery of Ireland, two popular tourist attractions, were also covered by the alert. The embassy also warned that a possible 24-hour public sector strike on Thursday could affect government services, schools and popular tourist attractions across Ireland. Start your day with everything you need to know. Morning Report offers the latest news, videos, photos and more. Thanks for signing up! Embassy officials urged Americans to avoid demonstrations and large crowds, warning that even peaceful protests could turn into clashes. Americans were also encouraged to allow additional travel time, monitor local authorities for updates and check with tour operators about possible closures or disruptions. Fox News Digital has reached out to the State Department for additional comment. Embassy officials urged Americans to avoid demonstrations and large crowds, warning that even peaceful protests could turn into clashes. NurPhoto via Getty Images Americans were also encouraged to allow additional travel time, monitor local authorities for updates and check with tour operators about possible closures or disruptions. NurPhoto via Getty Images The warning comes as US officials have issued similar alerts for Americans traveling to other European countries in recent weeks. Earlier this month, Americans traveling to France were warned to prepare for possible widespread protests and unrest amid nationwide protests, some of which were violent. In Spain, Americans were also warned of potential travel disruptions as workers in the transportation and hospitality sectors were called to protest the country’s housing crisis.