self-defense

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The US Navy warship USS Sampson (DDG 102) docks at the Amador International Cruise Terminal in Panama City on September 02, 2025. Venezuelan President Nicolas Maduro said on September 1, 2025, that eight US military vessels with 1,200 missiles were targeting his country, which he declared to be in a state of "maximum readiness to defend" itself. (Photo by MARTIN BERNETTI/AFP via Getty Images)

Asserting a License to Kill: Why the Caribbean Strike is a Dangerous Departure from the “War on Terror”

An absence of credible legal basis for the Caribbean strike suggests the Trump admin is asserting a prerogative to kill outside the law.
The Ukrainian and Taiwanese flags

A Security Guarantee for Ukraine? Look to the Taiwan Relations Act

The United States and its allies can use the Taiwan model to make post-war Ukraine more secure without writing checks they cannot cash.
Satellite image of the orbit of ASAT debris from a China ASAT weapons test in 2022.

Balancing State Security and Peace and Security in Outer Space: What Role for International Law on the Use of Force?

Understanding jus ad bellum necessity and proportionality is crucial to addressing concerns regarding the weaponization of outer space.
Kyiv buildings at night with explosions in the sky

The Voices from Kyiv: Is the World Legal Order in Decay?

The Russian invasion of Ukraine, and states’ reactions to it, are setting the stage for possible changes to the international legal order. In the end, this is a battle for a…
Kyiv buildings at night with explosions in the sky

Голоси з Києва: чи це епоха руйнування світового правопорядку?

Існують різні переломні точки в історії, які визначили метаморфозу міжнародного правопорядку.
Smoke billows from a city neighborhood of tan, brown buildings.

Assessing Jus Ad Bellum Proportionality: A Factored Approach

Nine factors, considered in their totality, would provide a more nuanced understanding of jus ad bellum proportionality and assist States in identifying specific concerns with…
The U.N. Security Council sits in around a large open circular table, with a mural in the background.

Q&A with Eliav Lieblich on Iran-Israel Hostilities

Expert insight on the legality of recent attacks by Iran and Israel, how domestic politics could impact an Israeli response, and prospects for de-escalation.
Pictures of victims of the Noval music festival stand at the site of the October 7th massacre

A Plea to the International Law Community: On De-Humanizing and the October 7th Atrocities

A plea for the equal application of international law to protect against atrocities in the Israel-Hamas War.
Shot of the UN Security Council

Proportionality in Self-Defense: A Brief Reply

A response to an article published on how military campaigns can never be rendered disproportionate by the total harm inflicted on civilians.

The Problem of Proportionality: A Response to Adil Haque

Whether the magnitude of State responses to terror is ethical and wise goes beyond determinations of legal compliance.
Members of the United Nations Security Council listen to Palestinian Permanent Observer Riyad H. Mansour speak.

Enough: Self-Defense and Proportionality in the Israel-Hamas Conflict

The right of self-defense does not permit a disproportionate loss of civilian life, writes Professor Adil Haque in this essay on what U.N. Member States can say.
Missiles against a background of a sunset sky

How the Arms Trade Treaty CSP9 Risks Repeating Past Mistakes

The 9th Conference of State Parties to the Arms Trade Treaty could set back the responsible business conduct movement by over a decade.
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