Jump to Content Jump to Main Navigation

The Max Planck Encyclopedias of International Law

Welcome to the home of the most trusted reference work in international law, the Max Planck Encyclopedia of Public International Law, as well as the recently launched Max Planck Encyclopedia of International Procedural Law. The two Encyclopedias can be searched and browsed together, or separately by using appropriate filters. Find out more about the Encyclopedias and their teams by following the links on this page.

Introducing the new General Editor of MPEPIL

Professor Anne Peters, the director at the Max Planck Institute for Comparative Public Law and International Law, takes over as the General editor of the Max Planck Encyclopedia of Public International Law from Professor Rüdiger Wolfrum.





Site News

June 18, 2021

New Titles

 2 new titles have been added to OSAIL.

June 7, 2021

New Headnotes

3 new headnotes have been added to Oxford International Organizations.

June 7, 2021

New Cases

Oxford Reports on International Law adds 22 new cases. 

June 4, 2021


Nine articles have been updated on MPEPIL.

Latest Content

Most-Favoured-Nation Clause

Akbar Rasulov, Robin Geiß, Meinhard Hilf