Dead Hand

The "Dead Hand" system, also known as a doomsday machine, is a hypothetical or actual automated nuclear weapon launch system designed to deter a nuclear attack. The concept, popularized by physicist Herman Kahn, involves a device that would automatically launch intercontinental ballistic missiles (ICBMs) in response to a nuclear explosion or an imminent attack.1

The primary goal of such a system is to guarantee the annihilation of an aggressor, thereby serving as the ultimate nuclear deterrent. While the United States has not constructed a literal doomsday machine, the principle is echoed in the doctrine of mutually assured destruction (MAD), where the threat of overwhelming retaliation prevents a first strike.12

Reports suggest the Soviet Union developed a system called "Dead Hand" in the early 1980s. This automated system was allegedly designed to launch nuclear missiles if Moscow detected a nuclear attack and communication lines were severed, implying the leadership was incapacitated.1