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 ReadingWhy Canada’s Terrorism Exception Does Not Violate International Law
Like the United States, Canada has an exception in its State Immunity Act (SIA) for state supporters of terrorism. Canada has put Iran and Syria on the list of states against which claims for terrorism may be brought in Canadian courts. Under the SIA, Canadian courts have found Iran liable for shooting down a Ukraine…
Continue ReadingHalkbank Files New Cert Petition
Halkbank, a Turkish state-owned bank accused of violating U.S. sanctions on Iran, filed a petition for certiorarilast week seeking a second chance to convince the Supreme Court that it is immune from criminal prosecution in the United States. In its first trip to the Court, back in 2023, Halkbank argued that it was entitled to…
Continue ReadingCVSG in Wye Oak v. Republic of Iraq: Is it Time to Resolve the FSIA “Direct Effect” Circuit Split?
On April 28, 2025, the Supreme Court called for the views of the Solicitor General (colloquially a “CVSG”) in Wye Oak Tech., Inc. v. Republic of Iraq. This is the latest chapter in a decades-long attempt by Wye Oak (discussed in a separate blog post) to recover damages for the breach of a contract it…
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