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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+ International & Comparative Law

Lexis+ 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+ search box
  • Select the Practice Area tab
  • Select the Source tab, or
  • Select the Topics tab

- In the International Law Practice Area you can search sources such as:


Westlaw - Research Basics

Westlaw: International & Comparative Law

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

Cases, Documents, Treaties:

Federal Administrative Decisions & Guidance:

  • Department of Defense (DOD)
  • Department of Homeland Security (DHS)
  • Department of Justice (DOJ)
  • Department of State (DOS)
  • Federal Trade Commission (FTC)
  • Foreign Service Grievance Board (FSGB)
  • International Trade Administration (ITA)
  • International Trade Commission (ITC) decisions


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".  There are a number of treatises arranged by country plus 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 - Research Basics

Bloomberg Law:

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 can receive email update with the contents (and links) to specified reports and topics including Bloomberg International Law Journal and International Trade News.

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