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New Class of Threat

• Hypersonic missiles are a new class of threat because they are capable both of maneuvering and of flying faster than 5,000 kilometers per hour, which would enable such missiles to penetrate most missile defenses and to further compress the timelines for response by a nation under attack.
• The proliferation of such missiles beyond the United States, Russia, and China could result in other powers compressing their response timelines in ways that set their strategic forces on hair-trigger states of readiness — such as a strategy of "launch on warning." And such proliferation could enable such states to more credibly threaten attacks on major powers.

Time Is Key

• There is probably less than a decade available to substantially hinder the potential proliferation of hypersonic missiles and associated technologies.
• There appears to be interest in hypersonic missile nonproliferation and at least a few years available for relevant governments to put a policy in place.

International Concern

• The unavoidable requirement is for the United States, Russia, and China to agree on a nonproliferation policy.
• France could play a key role in bringing other governments into agreement on a broader control policy.
• The technical and economic barriers to developing hypersonic technology are great enough to add to the effectiveness of a nonproliferation policy.

Hypersonic missiles — specifically hypersonic glide vehicles and hypersonic cruise missiles — are a new class of threat because they are capable both of maneuvering and of flying faster than 5,000 kilometers per hour. These features enable such missiles to penetrate most missile defenses and to further compress the timelines for a response by a nation under attack.

Hypersonic missiles are being developed by the United States, Russia, and China. Their proliferation beyond these three could result in other powers setting their strategic forces on hair-trigger states of readiness. And such proliferation could enable other powers to more credibly threaten attacks on major powers.

The diffusion of hypersonic technology is under way in Europe, Japan, Australia, and India — with other nations beginning to explore such technology. Proliferation could cross multiple borders if hypersonic technology is offered on world markets.

There is probably less than a decade available to substantially hinder the potential proliferation of hypersonic missiles and associated technologies. To this end, the report recommends that (1) the United States, Russia, and China should agree not to export complete hypersonic missile systems or their major components and (2) the broader international community should establish controls on a wider range of hypersonic missile hardware and technology.

• Chapter One

  Introduction: What This Report Addresses

• Chapter Two

  Strategic Consequences of Hypersonic Missile Proliferation

• Chapter Three

  Ongoing Hypersonic Technology Proliferation

• Chapter Four

  Hindering Hypersonic Missile Proliferation

• Chapter Five

  Conclusions

• Appendix A

  The Hypersonic Flight Regime

• Appendix B

  Survey of Foreign Hypersonic Activity

• Appendix C

  Technical and Economic Barriers to Hypersonic Systems Development

• Appendix D

  Suggested Export Control List for Hypersonic Technologies