Threats

Fears of a nuclear arms race rise as New START expires

Fading U.S. leadership has countries from Poland to South Korea thinking about nuclear-weapons programs of their own.

Ideas

Ukraine’s future may turn on upcoming votes in Congress

As lawmakers sprint to fund the U.S. government, America’s support for Kyiv hangs in the balance—and could determine how the conflict ends.

Ideas

On Europe, the Trump administration is out of step with Congress, Americans

Most recognize Russia as an antagonist that must be opposed—with force, if necessary.

Science & Tech

Defense One Radio, Ep. 200: Paul Scharre explains the global AI arms race

The former Army Ranger explores how AI might reshape drone warfare, America's tech race with China, Russia's war in Ukraine, and much more.

Policy

Majority of Americans favor more support to Ukraine, Ukrainian victory

As the Trump administration pushes Ukraine to concede, survey finds most Americans want to do more to help Ukraine expel Russia from its borders.