Francesca Giovannini is executive director of the Project on Managing the Atom (MTA) at the Harvard Kennedy School’s Belfer Center for Science & Internati

When a major country moves unilaterally to increase its own security, it triggers a greater sense of insecurity in others. The recent move by the United States to adjust its nuclear response strategy is having exactly that effect, along with a return of Cold War thinking.

Nuclear deterrence has been a defining characteristic of international security for nearly a century now. Already having weathered one Cold War, could China push the U.S. over the edge towards an all-out arms race in the 21st Century?

It is essential that China and the United States avoid a nuclear arms race. The recent stabilization of relations is a prerequisite for bilateral nuclear dialogue. Such a dialogue, in turn, will help maintain not only strategic stability but also healthy overall ties.

As China continues to rapidly increase its nuclear arsenal, the United States and its allies are exercising strategic response options. But ultimately, it’s imperative that China curb its nuclear buildup to avoid an unwinnable three-way arms race.

The DPRK places Northeast Asia at risk, and their current military trajectory could pose problems for the PRC as well as the U.S. and its allies. So despite their fundamental differences, it’s in the best interests of both Washington and Beijing to find opportunities to cooperate to promote regional stability.

The raging Russia-Ukraine conflict is a stark reminder of the urgency of effective management of weapons of mass destruction. The international community must come together to restart the long-stalled international negotiations over arms control and nuclear disarmament by fully utilizing the existing mechanisms and platforms and generating greater consensus and impetus among all stakeholders. A staunch supporter of the international arms control and nuclear disarmament regime, China adheres to its longstanding nuclear policy of maximum restraint and remains committed to the pursuit of a new path leading to a world of enduring peace and stability.

With America distracted by the Russia-Ukraine conflict, the ICBM on the Korean Peninsula is not getting much attention. But the problem won’t go away without judicious action on both sides.

The Russia-Ukraine conflict raises uncertainties in negotiations for a renewed Iran nuclear deal. Thorny problems remain. But while there are negatives, there are also opportunities.

With the United States maintaining a hostile stance, the DPRK faces a bleak choice: either capitulate to U.S. nuclear and missile demands or try to unnerve the U.S. with a show of force. It is likely to try the latter first.