Articles

Stephen Walt argues for a return to a realism-based U.S. grand strategy.

All the world's nuclear-armed states (except for North Korea) have begun modernizing and upgrading their arsenals, leading many observers to predict that the world is entering a new nuclear arms race. While that outcome is not yet inevitable, it is likely, and if it happens, the new nuclear arms race will be different and more dangerous than the one we remember. More nuclear-armed countries in total, and three competing great powers rather than two, will make the competition more complex. Meanwhile, new non-nuclear weapon technologies — such as ballistic missile defense, anti-satellite weapons, and precision-strike missile technology — will make nuclear deterrence relationships that were once somewhat stable less so.

Donald Trump and Kim Jong-un trading threats with words like “fire and fury”; Pakistan deploying tactical nuclear weapons to counter Indian conventional threats; Russia enunciating an Orwellian doctrine of “escalate-to-de-escalate” that calls for early use of battlefield nuclear weapons; and major nuclear-weapons states modernizing their arsenals — nukes are back. The cruel irony: This is happening after eight years of a president who won the Nobel Peace Prize largely for his vision of a world free of nuclear weapons.

The 2016 nuclear security summit was a pivotal moment for the decades-long effort to secure nuclear material around the globe. More than 50 national leaders gathered in Washington for the last of four biennial meetings that have led to significant progress in strengthening measures to reduce the risk of nuclear theft.

"For nearly a century, in short, offshore balancing prevented the emergence of dangerous regional hegemons and pre­served a global balance of power that enhanced American security. Tellingly, when U.S. policymakers deviated from that strategy—as they did in Vietnam, where the United States had no vital interests—the result was a costly failure."