The last remaining nuclear arms pact between Russia and the United States is set to expire Thursday, removing any caps on the two largest atomic arsenals for the first time in more than a half-century ...

The National Nuclear Security Administration (NNSA) is celebrating “a significant milestone,” announcing that it completed a ...

Aerial view of Hiroshima, Japan, after atomic bombing of August 6, 1945. Whether a nuclear weapon might again be used by one nation against another is a question that has haunted the world for nearly ...

R OBERT OPPENHEIMER, the father of America’s nuclear bomb, described his country’s atomic rivalry with the Soviet Union as “two scorpions in a bottle”. The risks of this standoff have been contained ...

With doomsday nuclear weapons the last remnant of Russia's superpower status, President Vladimir Putin is stepping up threats to use them against Western powers aiding Ukraine. (Photo by Alexander ...

Brett McGurk is a CNN global affairs analyst who served in senior national security positions under Presidents George W. Bush, Barack Obama, Donald Trump and Joe Biden. In the summer of 2022, I ...

It would take about 30 minutes for a nuclear-armed intercontinental ballistic missile (ICBM) to travel from Russia to the United States. If launched from a submarine, it could arrive even faster than ...

Since the dawn of the nuclear age, policymakers and strategists have tried to prevent a country from deploying nuclear weapons by mistake. But the potential for accidents remains as high as it was ...

One of the least-discussed but most consequential outcomes of the resurgence of major-power rivalries is the return of nuclear weapons to the center of international politics. The global salience of ...

Many political parties in Japan are re-evaluating nuclear power generation nearly 15 years after the country's worst nuclear accident. Still, energy policies are seen as a major issue in the Feb. 8 ...