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Sources of Public International Law

This guide will help you locate the sources necessary for researching a problem involving public international law.

National Courts & Tribunals

High Courts in most jurisdictions have their own websites on which you can find decisions and other court documents. While some of these sites have an English version, remember that most often they will be only in the official languages of that jurisdiction and/or the non-English version will have more information and materials available on it.  Examples:

To find more official court sites and materials in translation see WorldLII and/or the Foreign Law Guide.  Or our guide below for more inspiration:

Introduction

Judicial decisions serve only as evidence of international law.  This distinction may be challenging for those with a background in the common law because there is no stare decisis at the international level. Opinions are only binding on the parties themselves making them persuasive authority elsewhere.  Searching for these materials will also look different to those familiar with case law searching on Westlaw or Lexis because there isn't a single database that contains the work of the ever-growing number of international judicial bodies.  

International Courts & Tribunals

If you have a citation in hand (which we hope you do), going to the court or tribunal's website is likely the best way to proceed.  On these websites you can find the case decisions and, in some cases, the preliminary documentation as well.  Some are full text searchable, others you are only able to browse.  Examples:

Databases