Other Sources of International Law

Other Sources of International Law

Learn about the other sources used to identify and interpret international law.


This lesson examines some of the sources used to understand international law. We’ll discuss how to identify these sources and incorporate them into your analysis of international issues.

I.               Source of Law

International law draws on four main sources. They’re treaties, customary law, principles of law found across legal systems, and the writings of international legal scholars and jurists. Treaties and customary...