Nuclear Issues

Joseph Nye considers lessons from his own work on preventing the spread of nuclear technology in the 1970s.

Kari A. Bingen and Heather W. Williams write that if Russia plans to deploy nuclear weapons in space to target satellites, the threat is definitely serious—and the U.S. should act fast.

2023 marked eighty years since the wartime adoption of the BRUSA Agreement between Great Britain and the United States. This 1943 document codified the growing relationship between
U.S. and U.K. signals intelligence organizations and included policies governing the exchange of personnel and joint regulations for handling sensitive material. Security directives and protocols aligned operational processes between the democratic governments, setting new cooperative standards for nation-states battling authoritarian regimes. 

At a moment when arms control is deeply troubled and may be dying, two eminent scholars, Marc Trachtenberg and the late Robert Jervis, have taken a fresh look at the beginnings of strategic arms control fifty years after the signing in Moscow of the SALT I agreements in May of 1972. They do so from different vantage points, writes Steven E. Miller.

The Washington Declaration signed by U.S. President Joe Biden and South Korean President Yoon Suk-yeol yesterday should be a ringing reminder of one of the greatest achievements of U.S. national security strategy: its decadeslong success in preventing the proliferation of nuclear weapons. The agreement strengthened nuclear deterrence coordination between the two allies and offered a greater sense of assurance that South Korea falls under the U.S. nuclear umbrella.

Most public discussion this winter reflects a conviction that Ukraine must — and can — win a decisive victory. But what constitutes a win against a country such as Russia? As we consider the road ahead, we cannot escape the brute fact that Putin commands an arsenal of roughly 6,000 nuclear weapons that could kill us all.

By now, it is clear that Russian President Vladimir Putin’s war in Ukraine has been a grave strategic error. As Napoleon Bonaparte’s former minister of police said of the French leader’s foolish execution of a rival duke, his actions could be described as “worse than a crime … a blunder.” Yet even as Putin’s war has undermined Russia on the geopolitical stage, we should not overlook the fact that Russia has succeeded in severely weakening Ukraine on the ground.

 Stephen Walt decided to look back to see if 2022 had gone according to his expectations. In his last column of 2021, he had described "Biden’s 2022 Foreign-Policy To-Do List." What did he get right, what did he get wrong, and how well did the Biden administration perform?

Stephen Walt provides A realist POV on the war in Ukraine, competition with China, COVID, and more in the second part of an interview with Foreign Policy Editor-in-Chief Ravi Agrawal.

Recent quantitative scholarship uses warhead counts to examine whether nuclear superiority offers political or military benefits beyond having a secure second-strike capability. These analyses overlook other elements of a state’s nuclear capability such as state perceptions and beliefs.