The Trump administration imposed sweeping sanctions on the International Criminal Court on Friday, escalating its campaign against the Hague-based tribunal and triggering a diplomatic clash with European allies.

Secretary of State Marco Rubio announced the measures, which prohibit transactions with the court and threaten its access to U.S. financial services, technology, and commercial suppliers. The Treasury Department provided a 180-day transition period for certain activities. Rubio framed the sanctions as necessary to protect American sovereignty, stating, “Either the ICC will end its threats, or we will end the ICC.”

The court condemned the move as an “assault on the rule of law,” while ICC President Tomoko Akane vowed the institution would continue its mandate “with independence and impartiality.” The sanctions follow earlier U.S. actions targeting 13 ICC judges and prosecutors, including Akane and senior prosecutor Abdoulaye Seye in August.

Eight Western nations—Canada, Denmark, Germany, France, Italy, Japan, the Netherlands, and the United Kingdom—issued a joint statement condemning the sanctions, warning they would “severely impact” the court’s operations and endanger its staff. The ministers reaffirmed their “unwavering support” for the ICC and pledged to pursue dialogue ahead of the Assembly of States Parties in December.

Human Rights Watch called the sanctions an “unprecedented assault on global justice,” noting they could disrupt investigations into alleged war crimes and witness protection programs. The ICC, established under the 1998 Rome Statute, has 125 member states and investigates genocide, crimes against humanity, and war crimes.