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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.

In observance of World Humanitarian Day on the 19th of August, we’ve put together key chapters and articles in humanitarian law from across our products and books, and made them freely available for you to read throughout August.

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September 14, 2018

New OHT Editorial: The Wars of Louis XIV in Treaties (Part IV): The Second Peace of Westminster (19 February 1674)

Randall Lesaffer looks at the second peace of Westminster in the latest of The Wars of Louis XIV in Treaties.

August 30, 2018

The IMLI Treatise on Global Ocean Governance: now on OSAIL

Volumes I, II, and III of The IMLI Treatise on Global Ocean Governance are now available to read on OSAIL.

August 2, 2018

World Humanitarian Day 2018

Explore our collection of humanitarian law articles and chapters, in observance of World Humanitarian Day 2018.

August 1, 2018

New OHT Editorial: Erasing the Line: The Treaties of Madrid (1750) and San Ildefonso (1777)

In the latest editorial from Randall Lesaffer, explore the 1750 Treaty of Madrid, and the 1777 Treaty of San Ildefonso.