Customary international law provides immunity to states from the jurisdiction of foreign national courts. The immunity extends to state agencies and to state-owned property, protecting them from adjudicatory jurisdiction and from enforcement measures. Foreign sovereign immunity has important exceptions, including for waiver, for some conduct or property related to commercial activity, and for some torts committed on the territory of the forum state. In the United States, all aspects of foreign sovereign immunity for cases in state or federal court are governed by a federal statute, the Foreign Sovereign Immunities Act.
A Primer on Foreign Sovereign Immunity
The immunity of states from the jurisdiction of foreign domestic courts is a long-standing and mostly uncontroversial principle of customary international law. The International Court of Justice has described foreign sovereign immunity as a procedural doctrine of international law, one that “derives from the principle of sovereign equality of the States.” As a practical matter,…
Continue ReadingDistrict Court Denies Saudi Arabia’s Motion to Dismiss 9/11 Claims
On August 28, 2025, Judge George B. Daniels (Southern District of New York) denied the Kingdom of Saudi Arabia’s (KSA) motion to dismiss claims arising from the 9/11 terrorist attacks. In In re Terrorist Attacks on September 11, 2001, Judge Daniels concluded that the plaintiffs had presented sufficient evidence to establish an exception to KSA’s…
Continue ReadingHavlish v. Taliban—Second Circuit Affirms that Afghanistan Central Bank Assets are Immune from Attachment
The Second Circuit has finally decided whether frozen Afghan central bank assets can be attached or turned over to satisfy judgments against the Taliban for acts of terrorism against U.S. citizens. The court answered “no” in Havlish v. Taliban over one partial dissent. The case presents complex and important issues, and although both the majority…
Continue ReadingD.C. Circuit Holds that District Court Must Decide Jurisdictional Facts under FSIA for Itself
In a recent decision, Hulley Enterprises Ltd. v. Russian Federation, the D.C. Circuit held that a district court must decide for itself any “jurisdictional facts” necessary to establish subject matter jurisdiction in suits against foreign states under the Foreign Sovereign Immunities Act (FSIA). The plaintiffs sought to enforce an arbitral award against Russia. The FSIA’s…
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