Defense

Within Defense

Over the past 15 years, CNAS has shaped U.S. defense strategy and policy. Today, the United States must swiftly implement its defense strategy, develop innovative operational concepts, and undertake difficult institutional reforms to both meet the long-term challenges posed by great powers and short-term crises created by a diverse array of global actors. The CNAS Defense program addresses the central military challenges of today and tomorrow and assesses how to balance risk across time.

The Defense Program employs strategic, budgetary, and operational analysis and leverages innovative approaches such as wargaming to inform defense policy. We develop actionable policy recommendations on defense strategy, force structure, operations, and resourcing to help U.S. and allied leaders create needed change.

Support CNAS

Recent Publications

View All Reports View All Articles & Multimedia

Related Events

Event
Defense

Commanding the Air: the Future of Airborne Battle Management

Philip Sheers, Stacie Pettyjohn

Apr 22, 2026

Event
Defense

U.S. Defense at an Inflection Point: The 2026 National Defense Strategy

Stacie Pettyjohn, Becca Wasser, Mara Karlin

Jan 28, 2026

Event
Defense

Virtual Event | Drones and Deterrence: Building Taiwan's Asymmetric Capabilities 

Stacie Pettyjohn, Ely Ratner, Molly Campbell

Nov 4, 2025

View All Events

Related Press

In The News
Defense

Trump’s $1.5T Defense Budget to Weather Harsh Scrutiny on Capitol Hill

“On the one hand, it has a lot of the things that Congress has been asking the department to focus on: heavy investments in munitions production — both interceptors and offens...

In The News
Defense

Trump Administration Expected to Slash Iran War Funding Request

Stacie Pettyjohn, who directs the defense program at the Center for a New American Security, a think tank, said that even the reduced supplemental request would be a test of t...

In The News
Defense

How China Uses Commercial Ships to Pressure Taiwan Without Firing a Shot

Thomas Shugart, a former U.S. Navy officer and senior fellow at the Center for a New American Security, said the pattern was unprecedented. "If you can put hundreds or even th...

View All Press

Research Team