This episode examines how Sweden, Brazil, and Argentina each pursued nuclear capabilities during the Cold War but ultimately ...

Scientific knowledge about the damaging effects of nuclear-weapons testing helped to end such tests. Those findings haven’t changed.

President Donald Trump has called for the United States to test its nuclear weapons for the first time in three decades. But Trump’s statements about testing — in particular, whether other nations are ...

Nuclear weapons tests were once a regular occurrence, but most countries haven’t tested in decades, following the adoption of the Comprehensive Nuclear-Test-Ban Treaty in 1996. Now, that moratorium ...

For the first time in more than half a century, there are no binding restraints on the buildup of the largest nuclear forces on Earth. The New START treaty expired on Feb. 5, 2026, ending the last ...

Nuclear deterrence is once again central to U.S. national security. The relative calm of the post-Cold War world has been replaced by an era of dangerous competition with two nuclear armed adversaries ...