CIA
World Factbook - Provides information about
the geography, people, governments, economies, communications, militaries,
and more of 266 geographic entities.
Defense
Almanac - Information about
the Department of Defense -- its people, organization, equipment,
and funding.
DoD
Dictionary of Military Terms - Searchable
dictionary of military definitions.
Intelligence & Security
Encyclopedia - Explains issues
of espionage, intelligence and security most frequently in the news.
Security
Reference Guide - Hosted by Seth Fogie and
Cyrus Peikari.
Security Technical Implementation Guides -
From Defense Information System Agency .
