Kristensen, Hans M

Abstract
Nearly half a century after the five declared nuclear-weapon states in 1968 pledged under the nuclear Nonproliferation Treaty (NPT) to “pursue negotiations in good faith on effective measures relating to cessation of the nuclear arms race at an early date and to nuclear disarmament,”[1] all of the world’s nuclear-weapon states are busy modernizing their arsenals and continue to reaffirm the importance of such weapons.
None of them appears willing to eliminate its nuclear weapons in the foreseeable future.
Granted, the nuclear arms race that was a main feature of the Cold War is over, and France, Russia, the United Kingdom, and the United States have reduced their arsenals significantly. Nevertheless, huge arsenals remain, especially in Russia and the United States. China, India, North Korea, Pakistan, and possibly Israel are increasing their stockpiles, although at levels far below those of Russia and the United States. All nuclear-armed states speak of nuclear weapons as an enduring and indefinite aspect of national and international security.
As a result, the world’s nine nuclear-armed states still possess more than 10,000 nuclear warheads combined, of which more than 90 percent are in Russian and U.S. stockpiles. In addition to these stockpiled warheads, those two countries possess thousands of additional nuclear warheads. These warheads, retired but still relatively intact, are in storage awaiting dismantlement. Counting both categories of nuclear warheads, the world’s total combined inventory includes an estimated 17,000 nuclear warheads (fig. 1).
Moreover, many non-nuclear-weapon states that publicly call for nuclear disarmament continue to call on nuclear-armed allies to protect them with nuclear weapons. In fact, five non-nuclear-weapon states in NATO have volunteered to serve as surrogate nuclear-weapon states by equipping their military forces with the necessary tools to deliver U.S. nuclear weapons in times of war—an arrangement tolerated during the Cold War but entirely inappropriate in the post-Cold War era in which NATO and the United States are advocating strict adherence to nonproliferation norms as a foundation for international security.
Thus, although the numerical nuclear arms race between East and West is over, a dynamic technological nuclear arms race is in full swing and may increase over the next decade. Importantly, this is not just a characteristic of the proliferating world but of all nuclear-armed states. New or improved nuclear weapons programs under way in those countries include at least 27 for ballistic missiles, nine for cruise missiles, eight for naval vessels, five for bombers, eight for warheads, and eight for weapons factories (fig. 2).
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