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Welcome to Oxford Public International Law

Oxford Public International Law (OPIL) is a comprehensive, single location providing integrated access across our international law services, bringing you one step closer to the perfect research solution.

Our ground-breaking online resources work to speed up research and provide easy access to authoritative content, essential for anyone working in international law.

United Nations Collection

The United Nations (UN) was established in 1945, with the signing of the UN Charter, and has one central mission: the maintenance of international peace and security. With 193 member states and two observer states, the UN is the largest and most internationally represented intergovernmental organization in the world.

To learn more about the United Nations, explore our collection of freely available chapters on key UN documents from across Oxford Scholarly Authorities on International Law, and browse a selection of related articles from the Max Planck Encyclopedia of Public International Law.

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Site News

March 11, 2019

MPEPIL March 2019 Update

Six articles have been updated on MPEPIL.

March 6, 2019

International Women's Day

In honour of International Women's Day (8 March) explore our OPIL collection on gender and the law.

March 1, 2019

ASIL 2019 Collection

Our ASIL Annual Meeting 2019 content collection is now available.

March 1, 2019

UN Collection

Explore our United Nations Collection featuring content from across OSAIL and MPEPIL.