Allen S. Weiner

Allen weiner Headshot

Allen S. Weiner, JD

  • Senior Lecturer in Law
  • Director, Stanford Program in International Law
  • Director, Stanford Humanitarian Program
  • Director, Stanford Center on International Conflict and Negotiation
  • CISAC Core Faculty Member

Stanford Law School
559 Nathan Abbott Way
Neukom Faculty Office Building, Room N238
Stanford, CA 94305-8610

(650) 724-5892 (voice)
(650) 725-2592 (fax)

Biography

Allen S. Weiner, JD ’89, is an international legal scholar whose research and teaching focus primarily on the fields of international security and international conflict resolution. He also studies the challenges of online misinformation and disinformation. In the international security realm, his work spans such issues as international law and the response to contemporary security threats; the relationship between international and domestic law in the context of armed conflict; the law of war (international humanitarian law); just war theory, and international criminal law (including transitional justice).  In the realm of international conflict resolution, his highly multidisciplinary work analyzes the barriers to resolving intractable political conflicts, with a particular focus on the Israeli-Palestinian conflict. His work on misinformation and disinformation includes a focus on the potential harmful uses of social media in conflict settings, including war zones.  Weiner’s scholarship is deeply informed by experience; he practiced international law in the U.S. Department of State for more than a decade advising government policymakers, negotiating international agreements, and representing the United States in litigation before the International Criminal Tribunal for the former Yugoslavia, the International Court of Justice, and the Iran-United States Claims Tribunal.

Senior Lecturer Weiner is director of the Stanford Program in International and Comparative Law, director of the Stanford Humanitarian Program, and director of the Stanford Center on International Conflict and Negotiation. Before joining the Stanford Law School faculty in 2003, Weiner served as legal counselor at the U.S. Embassy in The Hague and attorney adviser in the Office of the Legal Adviser of the U.S. Department of State in Washington, DC. He clerked for Judge John Steadman of the District of Columbia Court of Appeals.

publications

The Internet at War: An Empirical and Legal Analysis of Harmful Narratives on Social Media During Armed Conflict

Author(s)
The Internet at War: An Empirical and Legal Analysis of Harmful Narratives on Social Media During Armed Conflict
Journal Articles
July 2026

Threatening to Use Force Illegally

Author(s)
Threatening to Use Force Illegally
Journal Articles
April 2026

“There is Nothing Left”: Jus ad Bellum Proportionality and Israel’s War Against Hamas in Gaza

Author(s)
“There is Nothing Left”: Jus ad Bellum Proportionality and Israel’s War Against Hamas in Gaza
Journal Articles
January 2026

In The News

Displaced Afghans are seen at a makeshift IDP camp in Kabul.
Q&As

The U.S. Withdrawal from Afghanistan and the Fall of Kabul: A Q&A with Allen Weiner

National security law expert Allen Weiner, a research affiliate at CDDRL and CISAC, discusses the U.S. mission to Afghanistan, its withdrawal and consequences moving forward.
The U.S. Withdrawal from Afghanistan and the Fall of Kabul: A Q&A with Allen Weiner
Commentary

Best hope for Hussein trial is to validate rule of law in Iraq

Best hope for Hussein trial is to validate rule of law in Iraq
News

North Korea's nukes

North Korea's nukes