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International Law Research Guide: Lexis, Westlaw & Bloomberg

A research guide to help researchers locate and understand public and private international law resources.


Lexis - Research Basics

Lexis Advance: International & Comparative Law

Lexis Advance is not the strongest resource for international law research, but it does provide access to U.S. cases addressing international law issues, a lot of articles covering international and comparative law, and a number of good secondary sources. 

There are several ways to locate the best international law sources on Lexis Advance including:

  • Search the Lexis Advance search box
  • Select the Practice Area tab
  • Select the Find A Source tab, or
  • Select the Find A Topic tab

- You will find international law sources such as:

  • Guide to International Legal Research
  • Handbook on International Commercial Arbitration
  • International Business Planning: Law and Taxation
  • International Court of Justice Advisory Opinions
  • International Court of Justice Filings
  • International Court of Justice Judgments
  • International Judicial Assistance
  • International Law Emerging Issues
  • International Law Update
  • International Legal Materials
  • International Trade Emerging Issues only
  • NAFTA Panel Review Decisions
  • Restatement of the Law 3d, Foreign Relations
  • Smit & Herzog on the Law of the European Union
  • U.S. Naval War College International Law Studies
  • US Court of International Trade Cases
  • World Arbitration Reporter


Westlaw - Research Basics

Westlaw: International & Comparative Law

Westlaw contains a limited number of resources covering international and comparative law.

Cases, Documents, Treaties:

- U.S. cases dealing with international law issues
- U.S. Court of International Trade
- Department of State documents
- United States Treaties and Other International Agreements
- United States Treaties in Force
- United States Immigration Administrative Decisions
- International Court of Justice
- International Legal Materials

Federal Administrative Decisions and Guidance:

  • Department of Homeland Security
  • Department of Justice
  • Department of State
  • Federal Trade Commission
  • Foreign Service Grievance Board
  • International Trade Administration
  • International Trade Commission Decisions


- Secondary Sources: Law Reviews and journal articles on international law
- International and foreign law journals

Treatises & Practice Guides:

The best resources with legal analysis of international and comparative law will be located by selecting the "International Materials" link and then "Treatises".  You will also find about 75 Multi-National Treatises.  These multi-national treatises may be your best resource available on Westlaw.  Each multi-national compilation includes analysis arranged by country.  Examples include:

Westlaw - Practical Law:

The Practical Law resources on Westlaw offer a rich collection of up-to-date in-depth content including Practice Notes, Standard Documents and Clauses, Checklists, Toolkits, Legal Updates, Country-by-Country Legal Research Guidance, Country Comparison Tools, and Subject Specific Practice Resources.

There are several ways to locate international and comparative law resources using Practical Law:


Bloomberg Law

Bloomberg Law / Bloomberg BNA - Research Basics

Bloomberg Law & Bloomberg BNA:

Bloomberg Law contains a limited amount of legal analysis of international legal issues mostly focusing on business law.  But the database does include excellent news and current awareness resources

Bloomberg Law provides access to:

Subscribe to Bloomberg Law email alerts - Hastings students who want to receive a free email update with the contents (and links to articles) to specified reports and topics including Bloomberg International Law Journal and International Trade News.