Nostalgia

The Moscow–Washington hotline is a system that allows direct communication between the leaders of the United States and the Russian Federation (formerly the Soviet Union). This hotline was established in 1963 and links the Pentagon with the Kremlin. Historically, with Soviet Communist Party leadership across the square from the Kremlin itself. Although in popular culture it is known as the “red telephone”, the hotline was never a telephone line, and no red phones were used.

Source: Wikipedia