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

SSBN

Kings Bay nuclear submarine hub dodged a bullet named Hurricane Idalia

By Jamie​ Kwong | Climate Change, Nuclear Weapons

Nuclear Notebook: Israeli nuclear weapons, 2022

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

DF-41 ICBM launchers at parade in Beijing in September 2020. The DF-41 is now operational in at least two brigades. Source: Chinese Ministry of Defense

Nuclear Notebook: Chinese nuclear forces, 2021

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

Nuclear notebook: Chinese nuclear forces, 2020

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

Members of the 319th Missile Squadron

How nuclear forces worldwide are dealing with the coronavirus pandemic

By John Krzyzaniak | Biosecurity, Nuclear Weapons

India's INS Vela submarine

India is building nuclear submarines and ICBMs. That’s a $14 billion mistake.

By Frank O’Donnell, Alexander K. Bollfrass | Analysis, Nuclear Risk

A Chinese intercontinental ballistic missile at a 2015 military parade in Beijing. China may be a source for other governments wishing to buy missiles. (Photo credit: Voice of America via Wikimedia Commons.)

Chinese nuclear forces, 2019

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

The USS Alabama, a US ballistic submarine. Credit: US Navy via Wikimedia Commons.

Invisible nuclear-armed submarines, or transparent oceans? Are ballistic missile submarines still the best deterrent for the United States?

By Owen R. Cote | Nuclear Risk, Nuclear Weapons

Chinese nuclear forces, 2018

By Hans M. Kristensen, Robert S. Norris | Nuclear Notebook, Nuclear Risk, Nuclear Weapons

skoreamissiles.jpg

A history of US nuclear weapons in South Korea

By Hans M. Kristensen, Robert S. Norris | Nuclear Notebook

Russian nuclear forces, 2017

By Hans M. Kristensen, Robert S. Norris | Nuclear Notebook

United States nuclear forces, 2017

By Hans M. Kristensen, Robert S. Norris | Nuclear Notebook