Arms Control TODAY
Volume 56: July/August 2026
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"Today, we both need to work to prevent the breakdown moment when guardrails against nuclear catastrophe evaporate, and be prepared to seize the breakthrough moment, when we can advance again in the direction of the security of a world free of nuclear weapons."
—ACA Board Chair, Tom Countryman, June 2024
The June 2026 Islamabad memorandum of understanding to halt the U.S.-Israeli war against Iran and reopen the Strait of Hormuz is a flawed but welcome development. This interim agreement aims to halt a misbegotten conflict that has killed thousands of people, disrupted the global economy, and failed to address the proliferation risk posed by Iran’s nuclear program, which cannot be bombed away.
June 22, 2026
U.S. President Donald Trump continues to allege, without evidence, that Iran’s nuclear program posed an imminent threat to the United States. The following are answers to frequently asked questions about Iran’s proliferation risk and nuclear security issues.
March 10, 2026
U.S. President Donald Trump and senior administration officials have offered conflicting justifications for the renewed U.S. strikes on Iran, including the claim that Iran’s nuclear and missile programs posed an imminent threat to the United States. There is no evidence, however, to support those claims. Read this issue brief for answers to FAQs on these claims.
March 3, 2026
The U.S. Defense Department decided earlier this year to conduct a “nuclear strategy review“ rather than a more formal Nuclear Posture Review. The last formal Nuclear Posture Review was completed in late-2022 by the Biden administration, which informed the Pentagon’s 2024 update of the Pentagon’s “Nuclear Weapons Employment” guidance plan.
August 6, 2026