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Would China escalate to nuclear use in a conventional war with the United States? If China believed that U.S. conventional attacks on missiles, submarines, air defenses, and command and control systems threatened the survivability of its nuclear forces or that the United States was preparing a counterforce attack, it might engage in limited nuclear escalation to gain military advantage or coerce the United States. The United States will face difficult trade-offs in deciding how best to manage the risk of nuclear escalation.

China's growing nuclear arsenal threatens to erode the United States' damage-limitation capability—its ability to destroy Chinese forces and thereby significantly reduce the damage that an all-out Chinese nuclear attack would inflict on the United States. Nevertheless, the United States should not attempt to preserve this capability. Doing so is technologically infeasible, would not add to the U.S. nuclear deterrent, would heighten tensions with China, and would increase the risk of nuclear escalation in a crisis.

Many analysts worry that recent advances in U.S. military capabilities could cause China to abandon its nuclear strategy of assured retaliation and its no-first-use doctrine. The writings and statements of Chinese nuclear experts, however, suggest that such fears are misplaced.

When do states acquire nuclear weapons? History shows that only two types of states decide that the bomb is essential to their security: 1) very powerful states; and 2) weak states that lack ironclad security guarantees.

Policymakers have long focused on preventing nuclear weapons proliferation by controlling technology. Even developing countries, however, may now possess the technical ability to create nuclear weapons. The history of gas centrifuge development in twenty countries supports this perspective. To reduce the demand for nuclear weapons, policymakers will have look toward the cultural, normative, and political organization of the world.

In 1985, researchers at the Harvard Kennedy School published a book called “Hawks, Doves, and Owls,” and gave it an ambitious subtitle: “An Agenda for Avoiding Nuclear War.” Those scholars gathered again at the School on Monday (May 16) for a seminar on the current challenges in avoiding nuclear war — and to marvel at just how drastically the nuclear threat has morphed in the two decades since the Cold War ended and the Soviet Union collapsed.

Hui Zhang argues that China's pledge of no-first-use of nuclear weapons, while constraining its nuclear force at a minimum level, maintaining its deeply de-alerted status, and upholding its long-standing position to support complete nuclear disarmament, has set a good example for other nuclear nations, in particular the two nuclear superpowers.  Zhang suggests that Beijing believes that all nuclear states should adopt a no-first-use policy and redefine the role of nuclear weapons in their national security doctrines. Although China stands ready to support the nuclear-free agenda, it is up to the two countries with the overwhelming number of the world's warheads to take the lead.

"...[A] primary goal in the next decades must be to remove this risk of near global self-destruction by drastically reducing nuclear forces to a level where this outcome is not possible, but where a deterrent value is preserved — in other words, to a level of minimum deterrence. This conception was widely discussed in the early years of the nuclear era, but it drowned in the Cold War flood of weaponry. No matter how remote the risk of civilization collapse may seem now — despite its being so vivid only a few decades ago — the elimination of this risk, for this century and centuries to come, must be a primary driver for radical reductions in nuclear weapons."