A U.S. embassy is a diplomatic mission located in a foreign country, representing the interests of the United States. It serves as a base for U.S. diplomats and staff, who work to maintain and strengthen relations between the U.S. and the host country. The embassy provides various services, including visa processing, assistance to American citizens abroad, and promoting U.S. policies. Embassies are typically located in the capital city of the host nation and are often housed in secure buildings. They play a crucial role in international relations, helping to facilitate communication and cooperation between the U.S. government and the foreign government.