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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

Be a part of the solution. Join today!

With the expiration of the New Strategic Arms Reduction Treaty (START), the last bilateral treaty limiting the massive U.S. and Russian nuclear arsenals, civil society is speaking out – on behalf of an American and global public concerned about nuclear weapons – against the failure of U.S. and other global leaders to halt the dangerous slide into unconstrained global nuclear competition.

February 11, 2026

Calls to upload reserve strategic warheads to existing U.S. delivery systems and for large future expansions of U.S. strategic forces are major impediments to the negotiation of a follow-on to the 2010 New Strategic Arms Reduction Treaty. There are alternatives to a strategic forces build-up to achieve the foreign policy goals of the United States.

October 29, 2025

Today, the Senate will vote on – and should approve – joint resolutions of disapproval that would block the Trump Administration’s proposed sales of 1,000-pound bombs, joint direct attack munitions (JDAMs), automatic rifles, and related support to the government of Israel.

July 30, 2025

Prior to New START’s expiration, ACA board chair Tom Countryman joined Massachusetts Senator Ed Markey, Oregon Senator Jeff Merkley, and California Representative John Garamendi to urge the replacement of New START and a return to negotiation to prevent an US-Russia arms race.

February 6, 2026