Why the Marshall Islands Nuclear Lawsuit Was Dismissed

The Marshall Islands’ nuclear lawsuits were dismissed for procedural reasons, not on the merits. At the International Court of Justice, the judges ruled in October 2016 that no legal “dispute” existed between the Marshall Islands and the three nuclear-armed states the court could hear, because those states had not been on notice that the Marshall Islands specifically opposed their conduct. In the United States, a federal judge and later the Ninth Circuit held that the Nuclear Non-Proliferation Treaty provision at issue could not be enforced in American courts and that the questions raised belonged to the political branches. No court reached the underlying claim that the nuclear powers were failing to disarm.

What the Marshall Islands Was Actually Asking For

On April 24, 2014, the Marshall Islands filed applications at the ICJ against all nine nuclear-armed states and a parallel complaint against the United States in the U.S. District Court for the Northern District of California.¹²

The claim rested on Article VI of the 1968 Nuclear Non-Proliferation Treaty, which obligates every state party to “pursue negotiations in good faith on effective measures relating to cessation of the nuclear arms race at an early date and to nuclear disarmament.”¹ A unanimous 1996 ICJ advisory opinion had read Article VI as requiring states not just to negotiate but to bring negotiations to a conclusion producing disarmament.³ The Marshall Islands argued the nine were breaching that obligation by modernizing their arsenals instead. It sought no money. It asked the courts to declare a breach and order negotiations for a disarmament convention to begin within one year.

Why the ICJ Dismissed the Cases

Six of the Nine Were Never Heard

Only three of the nine defendants had accepted the ICJ’s compulsory jurisdiction: India, Pakistan, and the United Kingdom. The applications against China, France, Russia, Israel, North Korea, and the United States were transmitted to those governments but never entered on the court’s General List, because those states had not consented to the court’s authority. No proceedings were held against them.⁴

The United Kingdom took a further step in late 2014, modifying its acceptance of ICJ jurisdiction to exclude disputes “substantially the same” as ones already before the court.⁵

The “No Dispute” Ruling

Hearings ran from March 7 to 16, 2016, and were confined to a single preliminary question: did an international dispute exist that would give the court jurisdiction?⁶ On October 5, 2016, the court dismissed all three active cases.

The court held that for a dispute to exist, the respondent state must have been aware, or could not have been unaware, that its views were “positively opposed” by the applicant at the time the application was filed.⁷ The Marshall Islands’ earlier diplomatic statements about disarmament, the court found, were too general to have put any of the three respondents on notice that the Marshall Islands specifically opposed their conduct. Without that awareness, there was no dispute to adjudicate.

The votes were tight. India and Pakistan were dismissed 9 to 7. The UK case ended in an 8-to-8 tie, broken by the casting vote of ICJ President Ronny Abraham in favor of dismissal.⁶

The Dissents

Several judges rejected the majority’s reasoning in strong terms. Judge Cançado Trindade called the approach “formalistic” and said it had “unduly heightened” the threshold for a dispute by requiring prior notice or awareness, a requirement he wrote did not exist in the court’s statute or in general international law.⁸ Judge Crawford said the court had abandoned its “tradition of flexibility.” Judge Robinson called it “disingenuous” to suggest the nuclear powers were unaware of the allegations given the notoriety of the disarmament debate.⁹

Vice-President Yusuf criticized the “subjective criterion” of awareness, writing that the court’s role is to evaluate conflicts of legal views on the evidence, “not to delve into the consciousness, perception and other mental processes of States.” Judge Tomka noted it was the first time in nearly a century of international adjudication that the court had dismissed a case because no dispute existed before the application was filed.¹⁰

Scholar Nico Krisch observed that six of the eight judges who voted to dismiss the UK case were nationals of nuclear-armed states, and the remaining two came from countries covered by nuclear umbrella arrangements.¹⁰

Why the U.S. Federal Case Was Dismissed

The parallel U.S. complaint alleged that the United States was in continuing breach of Article VI while planning to spend $1 trillion modernizing its nuclear arsenal over three decades, and asked the court to declare a breach and order compliance within one year.²

The U.S. government moved to dismiss on July 21, 2014, arguing that the Marshall Islands lacked standing, that the claims presented nonjusticiable political questions, and that the treaty was not directly enforceable in American courts.¹¹¹²¹³

The Marshall Islands appealed on April 2, 2015. On July 31, 2017, the Ninth Circuit affirmed. The panel held that Article VI is a non-self-executing treaty provision, describing it as “aspirational” and “future-oriented,” lacking mandatory language, and containing terms too vague to give courts a rule of decision. The panel also found the claims involved “inextricable political questions,” concluding that negotiating nuclear arms treaties is “prototypically political” and falls within the executive branch’s domain, not the judiciary’s.¹³¹⁴

What the Dismissals Did and Did Not Decide

No court ruled on whether the nuclear-armed states were actually complying with their disarmament obligations. Every dismissal turned on a threshold barrier: consent to jurisdiction and the existence of a dispute at the ICJ; standing, justiciability, and the enforceability of the treaty in U.S. courts. The underlying question of Article VI compliance was left untouched.

John Burroughs of the Lawyers Committee on Nuclear Policy said the cases were nonetheless “significant” for having “squarely challenged the nine nuclear states to comply with the legal obligation to pursue and conclude negotiations on nuclear disarmament.”⁶

What Followed the Dismissals

Shortly after the ICJ’s October 2016 dismissals, the UN General Assembly adopted a resolution to negotiate a treaty banning nuclear weapons outright. That process produced the Treaty on the Prohibition of Nuclear Weapons, adopted on July 7, 2017.¹⁰

Tony de Brum, the Marshall Islands foreign minister who drove the litigation and served as co-agent before the ICJ, died on August 22, 2017, weeks after the Ninth Circuit ruling.¹⁵ On March 3, 2025, Nuclear Victims Remembrance Day, President Hilda Heine signed the Marshall Islands’ accession to the Treaty of Rarotonga, the South Pacific Nuclear Free Zone Treaty. Heine noted that the country has not yet signed the Treaty on the Prohibition of Nuclear Weapons, citing its “unique historical and geopolitical circumstances,” and said that position would be reviewed.¹⁶

1
Lawyers Committee on Nuclear Policy. Marshall Islands
2
Keller Rohrback LLP. Keller Rohrback Files First Suit of Its Kind
3
Harvard Law School. Good Faith Negotiations
4
International Court of Justice. Obligations Concerning Negotiations – Marshall Islands v. Pakistan
5
European Journal of International Law. Capitulation in The Hague: The Marshall Islands Cases
6
Arms Control Association. Marshall Islands Lose Nuclear Cases
7
International Court of Justice. Obligations Concerning Negotiations – Marshall Islands v. India
8
International Court of Justice. Dissenting Opinion of Judge Cançado Trindade
9
National University of Singapore. Jurisdictional Formalism
10
Harvard International Law Journal. Decision of the International Court of Justice in the Nuclear Arms Race Case
11
Courthouse News Service. Islands Defend Challenge to U.S. Nuclear Program
12
Nuclear Age Peace Foundation. Nuclear Zero
13
U.S. Court of Appeals for the Ninth Circuit. Republic of the Marshall Islands v. United States
14
Civil Beat. Court Rejects Marshall Islands Suit Against U.S. Over Nuclear Treaty
15
The New York Times. Tony de Brum, Climate Change Advocate, Dies
16
Radio New Zealand. Marshall Islands Signs Treaty Banning Nuclear Weapons in the South Pacific