Volume 55, Number 8
October 2025

How Would Nuclear War Affect Climate? Scientists Are Divided.

By Andrew J. Ross

Scientists at the U.S. National Nuclear Security Administration have questioned the severity of climate risks posed by nuclear war but independent scientists at universities and civilian research agencies say nuclear war could drastically cool Earth’s climate.

Matthew Cancian

What Wargames Reveal About Expanding the U.S. Nuclear Arsenal

A series of wargames conducted by the Center for Strategic and International Studies and the Massachusetts Institute
of Technology went against the recommendations of war hawks who favor a nuclear weapons buildup.

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News and Analysis

GAO: ‘Feasible’ to Operate Minuteman III Through 2050

Iran to Suspend IAEA Deal After UN Sanctions Return

China Displays Modernized Nuclear Forces

North Korea Rejects Talks With South Korea, Seeks Them With U.S.

Russia Proposes One-Year New START Extension

Construction Detected at Israeli Nuclear Weapons Site

Pakistan Extends Nuclear Deterrence to Saudi Arabia

FOCUS

Daryl G. Kimball

Israel, Gaza, and the Erosion of International Order

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