Amid Putin’s nuclear saber-rattling, what exactly makes a nuclear weapon “tactical” — and is that even the right word to use? This week, Tom Collina talks with Hans Kristensen, director of the Nuclear Information Project at the Federation of American Scientists. He corrects the many misperceptions of “tactical” nuclear weapons and discusses how Russia could use nuclear weapons in Ukraine.

On Early Warning, Lauren Billet sits down with Allen Hester, who leads the Friends Committee on National Legislation’s Nuclear Disarmament and Pentagon spending portfolio. He discusses the Biden Administration’s newly released National Security Strategy and its implications for the long-awaited Nuclear Posture Review.