Public international law is the law between and among countries, i.e. treaties, agreements, international court decisions, and other commentary.
The tabs above will introduce you to these basic concepts and help you locate sources foreign and international law.
Since there is no overall legislature or law-creating body, research in this field requires the use of a wide variety of sources.
Students and scholars in the United States often use the Restatement of the Law (Third), the Foreign Relations of the United States as a guide to identifying international law as applied in the US (ALI Restatement 3rd, Section 101).
Article 38 (1) of the Statute of the International Court of Justice provides the sources of international law which it applies:
Researchers in international law may apply these sources though not necessarily in this order. In fact, it is often most efficient to begin your research with secondary sources.