Defense strategy & policy

Crafting sustainable, nonpartisan strategies with our allies and partners to counter, deter, and overcome the diverse military challenges posed by great-power competitors and other potential adversaries.

About our work

The Department of Defense needs a clear roadmap to counter today’s myriad security challenges—from strategic competitors and regional aggressors to violent extremist organizations and climate change. Strategic thinking is essential in order to align priorities and ensure US and allied national security.

Forward Defense explores this issue set through frank review of current defense policy, cogent expert analysis of the present security environment, and actionable recommendations for strategy to meet future defense challenges.

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Report

Jul 3, 2025

The National Defense Strategy Project

By Atlantic Council experts

As the world enters a pivotal new phase in global security, the United States must not only respond to current challenges but also anticipate those on the horizon. 

Artificial Intelligence Defense Policy

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Content

Cover credit: Helen Lundeberg, “The Veil,” 1947, The Macfarlane Collection

Atlantic Council Strategy Paper Series

Apr 11, 2021

The future of security in space: A thirty-year US strategy

By Clementine G. Starling, Mark J. Massa, Lt Col Christopher P. Mulder, and Julia T. Siegel

Outer space is rapidly transforming as new actors test new limits. This Atlantic Council Strategy Paper calls for the United States and its allies and partners to secure space over the next three decades or risk wasting the promise of this emerging domain.

China Cybersecurity

Seizing the advantage

Apr 2, 2021

Recalculating the math of great-power competition

By Arun Iyer

To better serve US interests, the Biden administration should recalculate the DoD’s GPC framework to address the threats that the country is most likely to confront, while improving the United States’ preparedness for the most dangerous threats. It should replace the single “2+3” concept with three multilayered and interactive frameworks nested upon one another.

Defense Policy Security & Defense

Issue Brief

Mar 29, 2021

The downsides of downsizing: Why the United States needs four hundred ICBMs

By Matthew Kroenig, Mark J. Massa, Christian Trotti

The United States is at a nuclear modernization crossroads. Critics of the land leg of the nuclear triad believe that an intercontinental ballistic missile (ICBM) force of 300 missiles will be cheaper and more stable than a force of 400. This issue brief shows that 400 ICBMs support the goals of US nuclear deterrence and are affordable.

China Defense Policy

Seizing the advantage

Mar 15, 2021

What the US can learn from the UK about strategic reviews

By Peter Watkins, Will Jessett CBE

The Biden administration has begun work on a slew of strategies—including a new National Security Strategy, National Defense Strategy, and Nuclear Posture Review—that will form the framework for its approach to security challenges. There’s a lot that it can learn from the British experience of conducting strategic reviews.

China Defense Industry

Seizing the advantage

Mar 1, 2021

How should the next National Defense Strategy balance terrorism, rogue regimes, and great-power competition?

By Matthew R. Crouch, Ronald C. Fairbanks

Our experts explore how the United States can tackle terrorism, address the advances of rogue regimes, and establish a balance between competition and cooperation with other global powers.

China Conflict

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In the news

In the News

Mar 16, 2026

Costa in the Washington Post on military readiness in Iran

By Atlantic Council

On March 16, Forward Defense Director Joe Costa published an article in the Washington Post on the impacts of the war in Iran on US military readiness. Writing alongside Ely Ratner of the Marathon Initiative, Costa argues that the threat to readiness runs deeper than depleted stockpiles—deferred maintenance, equipment cannibalization, and broken dwell-to-deploy thresholds threaten […]

China Defense Policy

In the News

Mar 12, 2026

Costa quoted in AFP article on US interceptor stocks in the conflict with Iran

By Atlantic Council

On March 2, Forward Defense director Joe Costa was quoted in an AFP article on US air defense interceptor stocks. Costa cautioned that a sustained conflict with Iran could impact the availability of these capabilities for other global priorities.

Defense Policy Defense Technologies

In the News

Feb 28, 2026

Daniels featured on NewsNation panel on the Pentagon’s use of AI

By Atlantic Council

On February 28, Forward Defense Nonresident Senior Fellow Owen Daniels appeared on a NewsNation panel discussing the Pentagon’s feud with Anthropic. Daniels points out that Anthropic’s action could set a precedent for future AI companies behavior, and that the Pentagon was concerned by this possibility.  

Artificial Intelligence Defense Policy

In the News

Feb 27, 2026

Daniels quoted in CNN article on the Anthropic safety saga

By Atlantic Council

On February 26, Forward Defense Nonresident Senior Fellow Owen Daniels was quoted in a CNN article on the Pentagon’s security concerns over Anthropic. Daniels pointed out that a large, near-term consequence for Anthropic is the loss of client and potential customer value and trust in the company.  

Artificial Intelligence Defense Policy

In the News

Feb 25, 2026

Daniels in PBS News on Anthropic’s bargaining power with the Pentagon

By Atlantic Council

On February 24, Forward Defense Nonresident Senior Fellow Owen Daniels was quoted in a PBS News article on Secretary of Defense Pete Hegseth’s feud with AI company Anthropic. In the article, Daniels points out that Anthropic does not have much bargaining power in the Pentagon, as other peers have complied with department policy. 

Artificial Intelligence Defense Policy

Forward Defense leads the Atlantic Council’s US and global defense programming, developing actionable recommendations for the United States and its allies and partners to compete, innovate, and navigate the rapidly evolving character of warfare. Through its work on US defense policy and force design, the military applications of advanced technology, space security, strategic deterrence, and defense industrial revitalization, it informs the strategies, policies, and capabilities that the United States will need to deter, and, if necessary, prevail in major-power conflict.

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