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

nuclear weapons

Less threats, more focus: What Biden needs to do to win an Iran nuclear deal

By Kimberly Peh, Soul Park | Nuclear Weapons

Will the EU diplomacy revive the Iran nuclear deal or keep spinning in a vacuum?

By Adérito Vicente | Nuclear Weapons

To sanction North Korea, sanction those that won’t—Russia and China

By Aaron Arnold | Nuclear Weapons

Zanskar River, in the Himalayas

Climate change and water scarcity will increase risk of nuclear catastrophe in South Asia

By Asha Asokan, Ira Helfand | Climate Change

silhouettes of sailors waving at India plane fly-by

Nuclear Notebook: How many nuclear weapons does India have in 2022?

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

How commercial satellite imagery could soon make nuclear secrecy very difficult—if not impossible

By Igor Moric | Nuclear Energy, Nuclear Risk, Nuclear Weapons

illustration of chess pieces made of flags of the nine nuclear weapons states falling over with Ukrainian flag in the background

Has the Russia-Ukraine war blown up the global nuclear order?

By Lauren Sukin | Nuclear Risk, Nuclear Weapons

Review: India’s “Rocket Boys” series fetishizes science—and the atomic bomb—in a dangerous way

By Urvashi Sarkar | Analysis, Nuclear Energy, Nuclear Weapons

US President Bill Clinton, Russian President Boris, Yeltsin, and Ukrainian President Leonid Kravchuk sign the Trilateral Agreement on transferring nuclear weapons from Ukraine to Russia and associated matters in Moscow, January 1994. Photo credit: Joseph P. Harahan, historian of the Defense Threat Reduction Agency, and the Clinton Presidential Library.

Why Putin’s betrayal of Ukraine could trigger nuclear proliferation

By Steven Pifer | Nuclear Weapons, Opinion

Making sense of North Korea’s recent ICBM and (possible) nuclear tests

By Seiyeon Ji, Victor Cha | Analysis, Nuclear Weapons

Rebuttal: Current nuclear weapons policy not safe or sane

By Stewart Prager, Alan Kaptanoglu | Analysis, Nuclear Risk, Nuclear Weapons

Nuclear Notebook: How many nuclear weapons does the United States have in 2022?

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