CONTENTS

Secretary’s Preface .................................................................................... I
Executive Summary ................................................................................. III
I. Introduction ....................................................................................... 1
II. The Evolving Threat Environment ............................................................ 5
Current and Emerging Threats to the Homeland ......................................... 8
Threats to U.S. Forces Abroad, Allies, and Partners .................................... 14
Potential Adversary Missile Defense and Antisatellite (ASAT) Advancements...... 20
Missile Proliferation Concerns .............................................................. 23
III. Roles, Policy, and Strategy .................................................................... 25
The Diverse Roles of U.S. Missile Defense ............................................... 26
Principles Governing U.S. Missile Defense ............................................... 30
Elements of Missile Defense Strategy ...................................................... 32
IV. U.S. Missile Defense Programs and Capabilities .......................................... 39
U.S. Homeland Defense ...................................................................... 41
Regional and Transregional Missile Defense .............................................. 45
Regional Active Defenses .................................................................... 47
Regional Active Defenses Against Cruise Missile Threats .............................. 53
Preparing for Emerging Offensive Missile Threats and Uncertainties ................ 54
Attack Operations for Missile Defense ..................................................... 60
V. Missile Defense Management and Testing ................................................... 61
Accelerate Missile Defense Acquisition Timelines ....................................... 62
Managing Pre-Launch Attack Operations Capabilities .................................. 63
Rigorous Testing .............................................................................. 63
VI. Working With Allies and Partners .......................................................... 65
Indo-Pacific ..................................................................................... 66
Europe and NATO ............................................................................ 69
The Middle East – Gulf Cooperation Council ............................................ 73
The Middle East – Israel ...................................................................... 74
South Asia ....................................................................................... 76
North America ................................................................................. 76
Allied and Partner Interoperability ......................................................... 77
VII. Conclusion ...................................................................................... 79

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