Bureau of Consular Affairs :: a service of the U.S. Department of State, this site lists U.S. Embassies and Consulate contact information and web sites in every country in which the U.S. maintains a diplomatic mission.
http://www.usembassy.gov

UnitedStatesVisas.gov :: an official source of information about U.S. visa policy and procedures.
Use this site to learn about the visa application process, understand current requirements, and get updates on recent developments.
www.unitedstatesvisas.gov

Foreign Consular Offices in the United States ::
a publication containing a complete and official listing
of the foreign consular offices in the United States, and recognized consular officers.
www.state.gov/s/cpr/rls/fco

U.S. Dept. of State Visa Services :: this site provides information on Visa types, applicable requirements, as
well as current visa processing procedures.
travel.state.gov/visa_services.html

The Bureau of Consular Affairs :: A resource guide for issues ranging from U.S. Passport applications and foreign adoption to help with absentee voting for U.S. Citizens overseas. travel.state.gov

CIA Fact Book :: a searchable database of virtually every country and territory in the world. Country maps, history, political make up and more. A great resource to familiarize yourself with a specific country:
www.cia.gov/cia/publications/factbook

CountryWatch.com :: provides country specific geopolitical intelligence on each of the 192 countries
of the world.
www.countrywatch.com/

Travel Warnings & Consular Information Sheets ::
Lists of travel advisories for U.S. Citizens published by
the State Department. This site also contains additional embassy and country specific information.
travel.state.gov/travel_warnings.html

Countries of the World :: a list of every country and territory in the world. The individual country listings
include maps, flags and historical narrative.
www.infoplease.com/countries.html