A world government is not needed to prevent nuclear world war, because such a war would be so catastrophic that the common sense of humanity will prevent it from ever happening. From the earliest days of the nuclear arms race, and especially after intercontinental ballistic missiles were perfected in the 1960s as the principal means of delivery of nuclear bombs, a delivery system for which no plausible defense could be devised, it was recognized that all-out world war was no longer a viable option in the contemporary world, simply because such a war would almost inevitably entail Mutual Assured Destruction (MAD). Not only would the immediate death and destruction be overwhelming, but the long-term effects from radiation and possible nuclear winter could be even worse. In the MAD world, the populations of all nations, especially those of the major powers, are held hostage in a sort of perpetual “Mexican standoff.” As paradoxical as it may seem, the development of nuclear weapons and ballistic delivery systems has created the most effective deterrent to unrestricted warfare ever seen in the history of the human race. The inescapable horrors of a nuclear war guarantee that such a war will never happen.