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

Related Events

Event
Defense / Middle East Security

U.S. Foreign Policy in the Middle East and Operation Epic Fury

Stacie Pettyjohn, Daniel Schneiderman

Apr 16, 2026

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

View All Events

Related Press

In The News
Defense / Transatlantic Security

Europe Troop Move Puts Spotlight on Last Man Out of Afghanistan

Downgrading to a lieutenant general would be “against the grain” for allies who see Russia as a near-term threat, said Jim Townsend, a former deputy assistant secretary of def...

In The News
Defense / National Security Human Capital

‘Insatiable’ Demand: Inside the Fight for a Bigger U.S. Special Forces Budget

“If they’ve got 100 Shaheds coming at them, how are they going to deal with that?” Jim Townsend, a former deputy assistant secretary of defense for European and NATO policy, t...

In The News
Defense

Trump Returns from China with Little Progress on Reopening Hormuz

“Negotiations are deadlocked, violence erupts sporadically and the economic costs of the prolonged closing of the Strait of Hormuz are rising,” Bloomberg Economics defense lea...

View All Press

Research Team