The Homeland Security Digital Library (HSDL) contains documents related to homeland security policy, strategy, and organizational management. The HSDL is sponsored by the U.S. Department of Homeland Security's National Preparedness Directorate, FEMA and the Naval Postgraduate School Center for Homeland Defense and Security. The documents come from many government and non-governmental sources including federal, state, tribal, and local government agencies, professional organizations, think tanks, academic institutions, and international governing bodies. Resources are selected and evaluated by a team of librarians and subject-matter specialists.

The State Department produces many useful documents on foreign countries.

The official U.S. gateway to all government information, is the catalyst for a growing electronic government. You can search millions of web pages from federal and state governments, the District of Columbia and U.S. territories. Most of these pages are not available on commercial websites. FirstGov has the most comprehensive search of government anywhere on the Internet.

The Central Intelligence Agency (CIA) is an independent US Government agency responsible for providing national security intelligence to senior US policymakers.

The National Security Branch (NSB)—created in September 2005 in response to a presidential directive—combines the missions and resources of our counterterrorism, counterintelligence, weapons of mass destruction, and intelligence elements under the leadership of a senior Bureau official. It also includes the Terrorist Screening Center, which plays a crucial role in providing actionable intelligence to state and local law enforcement.

The National Security Agency/Central Security Service (NSA/CSS) leads the U.S. Government in cryptology that encompasses both Signals Intelligence (SIGINT) and Information Assurance (IA) products and services, and enables Computer Network Operations (CNO) in order to gain a decision advantage for the Nation and our allies under all circumstances.

The National Security Council (NSC) is the President's principal forum for considering national security and foreign policy matters with his senior national security advisors and cabinet officials.

The Historical Office of the Office of the Secretary of Defense (OSD) dates to 1949. It is one of the longest serving continuously operating offices in the Office of the Secretary of Defense and has been recognized for the excellence of its publications and programs for over a half century.

The United States Agency for International Development is an independent agency of the United States federal government that is primarily responsible for administering civilian foreign aid and development assistance

Investigative and enforcement responsibilities for enforcement of federal immigration laws, customs laws, and air security laws was transferred to the Bureau of Immigration and Customs Enforcement (ICE).

Customs and Border Protection (CBP) is responsible for protecting the U.S. borders and is also part of the Department of Homeland Security.

This collection provides the public with access to research products produced by the Congressional Research Service (CRS) for the United States Congress. By law, CRS works exclusively for Congress, providing timely, objective, and authoritative research and analysis to committees and Members of both the House and Senate, regardless of political party affiliation.

You can view documents released through the FOIA and other CIA release programs.

The FBI has converted many FOIA documents to an electronic format (PDF), and they may be viewed here.

Get the FOIA information you need from one place from participating Federal agencies.

GlobalSecurity.org, launched in 2000, is a public policy organization focusing on the fields of defense, space exploration, intelligence, weapons of mass destruction and homeland security. With its editorial office located in Alexandria, Virginia, USA, the organization self-describes as a "leading source of background information and developing news stories" in these fields.

Data from U.S. State Department