Dead Hand
From Conservapedia
The Dead Hand, or Perimeter system, is a long-standing fail-safe mechanism/plan which guarantees a full-scale nuclear retaliation in case any nation is foolish enough to try a decapitation strike on Moscow.
It dates back to Soviet times, when a special regiment of SS-20 missiles was equipped with radio transmission devices instead of warheads. These missiles would be launched, broadcasting launch codes that would send all strategic nuclear force weapons to their targets, even if Moscow was taken out.
