The main command and control of the strategic missiles is called Kazbek. It is famous for its nuclear briefcase codenamed Cheget. Perimeter is an alternative command system of Russia's nuclear forces. It was designed to automatically control a massive nuclear attack.
The development of a system of guaranteed retaliation began in the midst of the Cold War when it became clear that electronic warfare systems, which were being constantly improved, would soon be able to block the regular channels controlling the strategic nuclear forces. A backup method of communication was needed that would guarantee the commands would make it to the launchers.