• Research
  • Emissary
  • About
  • Experts
Carnegie Global logoCarnegie lettermark logo
DemocracyIran
  • Donate
{
  "authors": [
    "James M. Acton"
  ],
  "type": "legacyinthemedia",
  "centerAffiliationAll": "dc",
  "centers": [
    "Carnegie Endowment for International Peace"
  ],
  "collections": [
    "U.S. Nuclear Policy"
  ],
  "englishNewsletterAll": "ctw",
  "nonEnglishNewsletterAll": "",
  "primaryCenter": "Carnegie Endowment for International Peace",
  "programAffiliation": "NPP",
  "programs": [
    "Nuclear Policy"
  ],
  "projects": [],
  "regions": [
    "North America",
    "United States",
    "East Asia",
    "China"
  ],
  "topics": [
    "Nuclear Policy"
  ]
}

Source: Getty

In The Media

Why Do We Need 'Hypersonic' Strike Weapons, Exactly?

It’s hard to dispute the notion that before spending billions of dollars on a new weapon, the Pentagon ought to be able to explain what it’s for. So it’s surprising how often this rule isn’t followed. Take the Advanced Hypersonic Weapon.

Link Copied
By James M. Acton
Published on Sep 17, 2014
Program mobile hero image

Program

Nuclear Policy

The Nuclear Policy Program aims to reduce the risk of nuclear war. Our experts diagnose acute risks stemming from technical and geopolitical developments, generate pragmatic solutions, and use our global network to advance risk-reduction policies. Our work covers deterrence, disarmament, arms control, nonproliferation, and nuclear energy.

Learn More

Source: Defense One

It’s hard to dispute the notion that before spending billions of dollars on a new weapon, the Pentagon ought to be able to explain what it’s for. So it’s surprising how often this rule isn’t followed.

Take the Advanced Hypersonic Weapon. Just tested last month, it’s the latest candidate technology being developed for the Defense Department’s Conventional Prompt Global Strike program, an effort to develop long-range, ultra-fast, non-nuclear weapons. Following a successful test in 2011, hopes were running high ,but the booster rocket went out of control and was deliberately destroyed shortly after its launch from Alaska. If the test had gone to plan, the rocket would have released a glider that would then have flown—without power—for about 4,000 miles across the Pacific at many times the speed of sound.

Members of Congress will undoubtedly want to know about the causes of this failure and whether a do-over is warranted (which it may well be since the glider itself never got the chance to perform). But they should also be asking tough questions about how this weapon fits into broader U.S. defense strategy.

Read the full article on Defense One.

About the Author

James M. Acton

Jessica T. Mathews Chair, Co-director, Nuclear Policy Program

Acton holds the Jessica T. Mathews Chair and is co-director of the Nuclear Policy Program at the Carnegie Endowment for International Peace.

    Recent Work

  • Other
    Unpacking Trump’s National Security Strategy
      • Cecily Brewer
      • +18

      James M. Acton, Saskia Brechenmacher, Cecily Brewer, …

  • Commentary
    Trump Has an Out on Nuclear Testing. He Should Take It.

      James M. Acton

James M. Acton
Jessica T. Mathews Chair, Co-director, Nuclear Policy Program
James M. Acton
Nuclear PolicyNorth AmericaUnited StatesEast AsiaChina

Carnegie does not take institutional positions on public policy issues; the views represented herein are those of the author(s) and do not necessarily reflect the views of Carnegie, its staff, or its trustees.

More Work from Carnegie Endowment for International Peace

  • flood wall
    Commentary
    Emissary
    BRIC Is Critical for U.S. National Security. After a Yearlong Legal Battle, It’s Back.

    Its reinstatement should be celebrated, but it retains some major shortcomings.

      Leonardo Martinez-Diaz

  • Man standing next to a pile of burned cars
    Commentary
    Emissary
    The Myriad Problems With the Iran Ceasefire

    Four Middle East experts analyze the region’s reactions and next steps.

      • Andrew Leber
      • Eric Lob
      • +1

      Amr Hamzawy, Andrew Leber, Eric Lob, …

  •  A machine gun of a Houthi soldier mounted on a police vehicle next to a billboard depicting the U.S. president Donald Trump and Mohammed Bin Salman, the Crown Prince and Prime Minister of Saudi Arabia, during a protest staged to show support to Iran against the U.S.-Israel war on March 27, 2026 in Sana'a, Yemen.
    Collection
    The Iran War’s Global Reach

    As the war between the United States, Israel, and Iran continues, Carnegie scholars contribute cutting-edge analysis on the events of the war and their wide-reaching implications. From the impact on Iran and its immediate neighbors to the responses from Gulf states to fuel and fertilizer shortages caused by the effective shutdown of the Strait of Hormuz, the war is reshaping Middle East alliances and creating shockwaves around the world. Carnegie experts analyze it all.

  • Commentary
    Strategic Europe
    Taking the Pulse: Can NATO Survive the Iran War?

    Donald Trump has repeatedly bashed NATO and European allies, threatening to annex Canada and Greenland and deploring their lack of enthusiasm for his war of choice in Iran. Is this latest round of abuse the final straw?

      • Rym Momtaz

      Rym Momtaz, ed.

  • A person faces away from the camera wearing a yellow jacket with "PRESS" printed across the back
    Paper
    The Impact of Ending U.S. International Media Assistance

    The future looks bleak for independent media worldwide, but there is a robust infrastructure of knowledge, organizations, and people to build upon.

      Daniel Sabet, Susan Abbott

Get more news and analysis from
Carnegie Endowment for International Peace
Carnegie global logo, stacked
1779 Massachusetts Avenue NWWashington, DC, 20036-2103Phone: 202 483 7600Fax: 202 483 1840
  • Research
  • Emissary
  • About
  • Experts
  • Donate
  • Programs
  • Events
  • Blogs
  • Podcasts
  • Contact
  • Annual Reports
  • Careers
  • Privacy
  • For Media
  • Government Resources
Get more news and analysis from
Carnegie Endowment for International Peace
© 2026 Carnegie Endowment for International Peace. All rights reserved.