The authoritative guide to ensuring science and technology make life on Earth better, not worse.

Nuclear Weapons

Australia’s “firenadoes” summon images of Hiroshima, atomic bombs

By Dawn Stover | Climate Change, Nuclear Risk, Nuclear Weapons

Illustration depicting a hypersonic missile

Hypersonic missiles: Why the new “arms race” is going nowhere fast

By Andrew W. Reddie | Analysis, Disruptive Technologies, Nuclear Weapons

The overwhelming case for no first use

By John P. Holdren | Analysis, Nuclear Weapons

James N. Miller

No to no first use—for now

By James N. Miller | Analysis, Nuclear Weapons

Loose cannons: The president and US nuclear posture

By Bruce G. Blair | Analysis, Nuclear Weapons

It’s time to jettison Nuclear Posture Reviews

By Brad Roberts | Analysis, Nuclear Weapons

Cool your jets: Some perspective on the hyping of hypersonic weapons

By Ivan Oelrich | Analysis, Nuclear Weapons

Minuteman III missile in silo

United States nuclear forces, 2020

By Hans M. Kristensen, Matt Korda | Nuclear Notebook, Nuclear Weapons

What the presidential candidates should be asked about arms control and nonproliferation

By Alexandra Bell | Analysis, Nuclear Weapons

A Minuteman III missile crew on alert.

Why nuclear weapons should be a major focus of the 2020 campaign

By John Mecklin | Nuclear Weapons

Kim Jong Un, giving his plenary speech. Photo credit: KCNA

Will killing of Iran’s Soleimani influence North Korea’s “strategic weapon” plans?

By Duyeon Kim | Columnists, Nuclear Risk, Nuclear Weapons

Hezbollah supporters at mass rally, vowing revenge for the killing of Qassem Soleimani, a commander of the Iranian Revolutionary Guard

What the Soleimani killing means for the Iran nuclear deal

By Abbas Milani | Analysis, Nuclear Risk, Nuclear Weapons