The Cold War News Agency TASS was the official news agency of the Soviet Union from 1925 to 1991. It was established in 1925 as the Telegraph Agency of the Soviet Union (TASS) and was the largest and most influential news agency in the Soviet Union. TASS was responsible for disseminating news and information about the Soviet Union to the world, and it was also used as a propaganda tool by the Soviet government. TASS was the primary source of news for the Soviet people during the Cold War, and it was also used to spread Soviet ideology to other countries.