Customary International Law

What Deference to the Executive in Halkbank Should Have Looked Like

As previously reported, the Second Circuit issued its opinion in United States v. Turkiye Halk Bankasi (Halkbank) on October 22, 2024, addressing the deference owed to the executive branch’s determination that Halkbank, a Turkish state-owned bank, is not immune from criminal prosecution for violating U.S. sanctions on Iran. Similar questions of deference to the executive…

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Second Circuit Holds for the Government in Halkbank Remand

The U.S. Court of Appeals for the Second Circuit has issued its opinion in U.S. v. Turkiye Halk Bankasi (Halkbank) following the Supreme Court’s decision to remand the case for further consideration of common law immunity issues. The same panel of Second Circuit judges held for the government the first time it heard the case…

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Victims of Hamas sue UNRWA

Victims of the October 7, 2023, attacks by Hamas have sued UNRWA USA, a Delaware non-profit that provides aid for Palestinians in Gaza. The case is one of several involving the war in Gaza, including one filed by residents of Gaza against the Biden administration and one brought by victims of Hamas against the National…

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Chiquita Liable for Financing Colombian Paramilitary Death Squads

In a win for international human rights advocacy, a Florida jury has found a U.S. corporation liable for human rights violations committed in a foreign country. This first of three “bellwether” trials involved nine cases. Hundreds remain to be tried in this multidistrict litigation. The jury’s verdict is the latest development in a civil case…

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Throwback Thursday: Banco Nacional de Cuba v. Sabbatino

Sixty years ago, on March 23, 1964, the U.S. Supreme Court handed down its decision in Banco Nacional de Cuba v. Sabbatino. By a vote of 8-1, the Court held that the act of state doctrine prevented U.S. courts from questioning the validity of Cuba’s expropriations of property owned by U.S. nationals, even if the…

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Second Circuit Hears Halkbank Oral Argument

On February 28, 2024, the Second Circuit heard oral argument in United States v. Turkiye Halk Bankasi A.S. From the judges’ questions—which admittedly came almost exclusively from Judge Bianco—the panel seems likely to hold that Halkbank, a Turkish state-owned bank, is not immune under federal common law from criminal prosecution for violating U.S. sanctions on Iran. That…

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What Does Customary International Law Say About Halkbank’s Immunity?

Tomorrow, the Second Circuit will hear argument in United States v. Turkiye Halk Bankasi A.S. to consider whether Halkbank, a Turkish state-owned bank (but not its central bank), is immune from criminal prosecution for violating U.S. sanctions on Iran. Halkbank claimed immunity under both the Foreign Sovereign Immunities Act (FSIA) and federal common law. The U.S….

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U.S. Brief in Halkbank Abandons Customary International Law in Immunity Cases

In Turkiye Halk Bankasi A.S. v. United States (Halkbank), the Supreme Court held that the Foreign Sovereign Immunities Act (FSIA) does not apply to criminal proceedings. The Court remanded Halkbank’s separate claim of common law immunity to the Second Circuit for reconsideration. On November 20, 2023, after two extensions, the United States filed its brief on remand. The U.S….

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Further Thoughts About Terrorism Exceptions and State Immunity

As regular readers know, Iran has sued Canada at the International Court of Justice (ICJ), arguing that the terrorism exceptions in Canada’s State Immunities Act (SIA) violate customary international law. The United States also has terrorism exceptions in its Foreign Sovereign Immunities Act (FSIA) for actions against state sponsors of terrorism and for actions based on international terrorism in the…

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Governmental and Non-Governmental Acts in Terrorism Exceptions to Sovereign Immunity

The Islamic Republic of Iran (“Iran”) brought proceedings in the International Court of Justice (“ICJ”) against Canada on June 27, 2023, alleging that Section 6.1(1) of Canada’s State Immunity Act (SIA), its “terrorism exception,” violates Iran’s sovereign immunities from jurisdiction and enforcement under customary international law. Section 6.1(1) creates an exception to the jurisdictional immunity…

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Ingrid (Wuerth) Brunk

Vanderbilt Law School
ingrid.wuerth@vanderbilt.eduEmail

William Dodge

George Washington University Law School
william.dodge@law.gwu.eduEmail

Maggie Gardner

Cornell Law School
mgardner@cornell.eduEmail

John F. Coyle

University of North Carolina School of Law
jfcoyle@email.unc.eduEmail

Zachary D. Clopton

Northwestern Pritzker School of Law
zclopton@law.northwestern.eduEmail

Paul B. Stephan

University of Virginia School of Law
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Noah Buyon

Duke University School of Law
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Naman Karl-Thomas Habtom

University of Cambridge
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Ben Köhler

Max Planck Institute for Comparative and International Private Law
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Melissa Stewart

University of Hawai'i, William S. Richardson School of Law.
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Ian M. Kysel

Cornell Law School
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Craig D. Gaver

Bluestone Law
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Gregg Cashmark

Vanderbilt Law School
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Rochelle C. Dreyfuss

NYU School of Law
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Linda J. Silberman

New York University School of Law
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