In-depth research & reports

Issue Brief

Jul 3, 2025

Homeland defense in an era of new strategic threats

By Clementine G. Starling-Daniels, Amy Cowley

From launching cyberattacks to targeting critical infrastructure, US rivals are bringing the fight closer to home. Defending against these threats will require not just military might, but smarter defense planning, greater resilience, and military modernization.

Defense Industry Defense Policy

Issue Brief

Jul 3, 2025

A pivot to China—not Asia

By Clementine G. Starling-Daniels, Edward Brady, Theresa Luetkefend

The next National Defense Strategy must prioritize competition with China beyond the Indo-Pacific—and clearly define how to recalibrate the size, structure, and posture of US forces.

Defense Industry Defense Policy

Issue Brief

Jul 1, 2025

A US framework for assessing risk in critical mineral supply chains

By Reed Blakemore, Peter Engelke

Critical mineral risks to US national and economic security should be evaluated on a mineral-by mineral basis

Energy & Environment

Report

Jun 30, 2025

Second-order impacts of civil artificial intelligence regulation on defense: Why the national security community must engage

By Deborah Cheverton

Civil regulation of artificial intelligence (AI) is hugely complex and evolving quickly, with even otherwise well-aligned countries taking significantly different approaches. At first glance, little in the content of these regulations is directly applicable to the defense and national security community.

Artificial Intelligence Defense Technologies

Issue Brief

Jun 5, 2025

Immediate steps that Europe can take to enhance its role in NATO defense

By Franklin D. Kramer, Kristen Taylor

As NATO members gather in the Hague amid uncertainty about US commitment to the continent and concerns about Russia’s military rebuilding, what can European nations do to deter and, if necessary, defeat threats from Moscow?

Europe & Eurasia NATO

Issue Brief

Jun 5, 2025

The world needs a maritime ‘elite league’ to combat rogue shipping

By Elisabeth Braw

The International Maritime Organization was created to address ocean safety. As member states have begun to erode and undermine the organization, there is need for coalitions of the willing or a maritime “elite league’ to come together and enforce stricter enforcement of international maritime rules and regulations.

Economy & Business International Organizations
British Army soldiers during Steadfast Dart 25, the Allied Reaction Force’s first large-scale exercise, in Romania on February 17, 2025. North Atlantic Treaty Organization (NATO)/Flickr, https://www.flickr.com/photos/nato/54354207050/in/album-72177720324100561.

Issue Brief

Jun 2, 2025

For NATO in 2027, European leadership will be key to deterrence against Russia

By Scott Lee, Andrew Michta, Peter Jones, and Lisa Bembenick

NATO lacks the operational integration, logistics, and joint force capabilities needed to quickly counter Russian mass and tempo near its borders. With the United States increasingly focused elsewhere, how can the Alliance retain military superiority in 2027 without overreliance on US military might?

Defense Policy Europe & Eurasia

Issue Brief

May 30, 2025

New presidents and new nuclear developments test the United States–Republic of Korea alliance

By Heather Kearney, Amanda Mortwedt Oh

In the coming years, the US-South Korea (Republic of Korea, or ROK) alliance is likely to be tested in at least three fundamental ways: by a concerning growth in North Korea’s nuclear and ballistic missile weapons program; by changes to ROK defense capabilities and structures, including the establishment of ROK Strategic Command (ROKSTRATCOM); and by potential strategy and policy changes under new US and ROK political administrations.

Arms Control Elections

Issue Brief

May 30, 2025

The frontier is the front line: On climate resilience for infrastructure and supplies in Canada’s Arctic

By Jeffrey Reynolds, Kristen Taylor

The front lines of strategic competition now run through the Arctic. Ottawa must do more to enhance its military readiness and infrastructure preparedness in the region.

Climate Change & Climate Action Defense Policy

Report

May 12, 2025

A rising nuclear double-threat in East Asia: Insights from our Guardian Tiger I and II tabletop exercises

By Markus Garlauskas, Lauren D. Gilbert, Kyoko Imai

A decade from now, the United States will face even tougher challenges in the Indo-Pacific than it does today. With this in mind, the Atlantic Council’s Guardian Tiger tabletop exercise series is preparing mid-level government and military leaders to address such threats.

Arms Control China
Load More