As when researching domestic U.S. law, secondary sources can be helpful to provide background, context and commentary on a topic in international law, and to identify primary sources of law, including treaties and international agreements.
From the Law Library's homepage, identify relevant publications by searching the SLU Law Library catalog (Catalog tab) or conducting a SLUth - Search Plus (Search tab) across multiple databases and formats.
A non-exhaustive list of other possible starting points for research is provided below.