Commonly Used Research Search Engines

Site Link Summary
Arms Control Association National nonpartisan membership organization dedicated to promoting public understanding and support for effective arms control policies.
BASE - Bielefeld Academic BASE is one of the world's most voluminous search engines especially for academic web resources. BASE is operated by Bielefeld University Library.
Federation of the American Scientists The Federation of American Scientists (FAS) provides science-based analysis of and solutions to protect against catastrophic threats to national and international security.
Google Scholar Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats.
GovTrack Launched in 2004, GovTrack helps everyone learn about and track the activities of the United States Congress.
JSTOR JSTOR is a digital library of academic journals, books, and primary sources.
Library of Congress The Library of Congress is the research library that officially serves the United States Congress, but which is the de facto national library of the United States
Muir S. Fairchild Research Info Center The Muir S. Fairchild Research Information Center houses well-balanced collections especially strong in the fields of war fighting, aeronautics, Air Force and DOD operations, military sciences, international relations, education, leadership, and management.
National Archives The National Archives and Records Administration (NARA) is the nation's record keeper. Of all documents and materials created in the course of business conducted by the United States Federal government.
National Security Archive The National Security Archive is an independent non-governmental research institute and library located at The George Washington University.          
Nuclear Threat Initiative NTI features daily news and in-depth resources/analysis on the threats from nuclear, biological and chemical weapons.
ResearchGate ResearchGate is a social networking site for scientists and researchers to share papers, ask and answer questions, and find collaborators.
Taylor and Francis Taylor & Francis Group is an international company originating in the United Kingdom that publishes books and academic journals.