International Law, the Civil Law Tradition, and Sources of Law – Part I

International Law, the Civil Law Tradition, and Sources of Law – Part I

International Law, the Civil Law Tradition, and Sources of Law – Part I Editors’ note: This is the first in a two-part post illustrating the impact of the civil law tradition on the formation of international law, specifically the sources of international law. This...
Lieber Studies Indo-Pacific Volume – Prisoners of War and a Taiwan Conflict

Lieber Studies Indo-Pacific Volume – Prisoners of War and a Taiwan Conflict

Lieber Studies Indo-Pacific Volume – Prisoners of War and a Taiwan Conflict Editors’ note: This post is based on the author’s chapter in Armed Conflict and International Law in the Indo-Pacific Region (Douglas Guilfoyle & Jennifer Maddocks eds. 2026), the...
Where the Environment Sits: Proportionality and Strikes on Russian Oil Infrastructure

Where the Environment Sits: Proportionality and Strikes on Russian Oil Infrastructure

Where the Environment Sits: Proportionality and Strikes on Russian Oil Infrastructure Through the spring and summer of 2026, Ukraine turned its long-range drone fleet into a systematic weapon against Russia’s refining sector. By late June, drones had struck eight of...
Self-Defence, the Principle of Due Diligence, and the Law of Neutrality in the Russia-Ukraine Conflict

Self-Defence, the Principle of Due Diligence, and the Law of Neutrality in the Russia-Ukraine Conflict

Self-Defence, the Principle of Due Diligence, and the Law of Neutrality in the Russia-Ukraine Conflict Russia’s (unlawful) aggression against Ukraine, and the international armed conflict that it has triggered, raises many novel questions concerning the interpretation...
Lieber Studies Indo-Pacific Volume – A Tale of Tenacity, Tensions, and Ambiguity: Mutual Defense Treaties and Defense Groupings in the Indo-Pacific

Lieber Studies Indo-Pacific Volume – A Tale of Tenacity, Tensions, and Ambiguity: Mutual Defense Treaties and Defense Groupings in the Indo-Pacific

Lieber Studies Indo-Pacific Volume – A Tale of Tenacity, Tensions, and Ambiguity: Mutual Defense Treaties and Defense Groupings in the Indo-Pacific Editors’ note: This post is based on the author’s chapter in Armed Conflict and International Law in the...
Whose Decision Was It? Drone Swarms and the Accountability Gap in Ukraine

Whose Decision Was It? Drone Swarms and the Accountability Gap in Ukraine

Whose Decision Was It? Drone Swarms and the Accountability Gap in Ukraine On June 1, 2025, Ukraine launched roughly 100 small drones at Russian airbases spread across several time zones. The platforms had been smuggled close to their targets in wooden containers, then...