The George W. Hopper Law Library and UW Libraries provide access to the following subscription databases which can be used for researching international human rights law. One's first instinct might be to head straight to Lexis or Westlaw, but note that these databases may not adequately include non-U.S. perspectives.
CIAO, Columbia International Affairs Organization
Ethnic News Watch
Foreign Law Guide
HeinOnline, Foreign and International Law Resources database
HeinOnline, United Nations Law Collection
HeinOnline, World Constitutions Illustrated
Human Rights Studies Online
Index to Foreign Legal Periodicals
Legal Scholarship Network
PAIS International