Secretary of State Marco Rubio said Thursday that the Trump administration plans to designate additional violent far-left organizations as foreign terrorist groups.

He said that the United States and its allies face a growing transnational threat fueled by political extremism.

Speaking at the State Department's Ministerial on the Resurgence of Political Terrorism, Rubio said the administration is expanding its counterterrorism strategy beyond Islamist extremism to target what he described as a renewed wave of violent far-left organizations operating across national borders.

"Last November, the State Department designated four violent far-left extremist groups as foreign terrorist organizations, and there will be more designations soon," Rubio told attendees.

He cited the assassination of conservative leader Charlie Kirk, the killing of UnitedHealthcare CEO Brian Thompson, and multiple assassination attempts against President Donald Trump as evidence of what he called a "distinctive and unique evil."

Rubio argued that political violence from the far left has been overlooked for years by the media, academia, and government institutions despite historical evidence.

"Far-left political terrorism is not a recent-day modern novelty. It is not a fiction manufactured by conservative politicians," Rubio said. "For most of the modern era, it was in fact the dominant form of political violence."

According to a State Department fact sheet released at the conference, far-left anti-government extremists accounted for 63% of all recorded anti-government attacks or plots in the U.S. during 2025.

The department also said violent far-left and anarchist groups were responsible for most politically motivated attacks in the West between 1970 and 1980 and have increased attacks on critical infrastructure in both Europe and the United States in recent years.

The ministerial brought together officials from more than 60 countries across Europe, Asia, and the Western Hemisphere to improve intelligence sharing, law enforcement cooperation, and financial efforts aimed at dismantling transnational extremist networks.

The department also highlighted a Rewards for Justice program offering up to $10 million for information disrupting the financing of designated extremist groups and said the United States is working with allies to restrict terrorist travel and strengthen international investigations.

Rubio said today's extremist networks cooperate across borders through encrypted communications, fundraising channels, and training networks, requiring a coordinated international response.

"Through intelligence and information sharing, through coordinated law enforcement strategy, through financial targeting and disruption, we will dismantle these networks brick by brick," Rubio said. "It is time for the people of the civilized world to defend ourselves."