• 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": [],
  "englishNewsletterAll": "ctw",
  "nonEnglishNewsletterAll": "",
  "primaryCenter": "Carnegie Endowment for International Peace",
  "programAffiliation": "NPP",
  "programs": [
    "Nuclear Policy"
  ],
  "projects": [],
  "regions": [
    "East Asia",
    "Japan"
  ],
  "topics": [
    "Nuclear Policy",
    "Nuclear Energy"
  ]
}

Source: Getty

In The Media

What Higher Radiation Levels Could Mean for Japan

Reports of increased radiation levels in the turbine room of Japan’s damaged nuclear reactor in Fukushima have increased concerns that damage has been done to the steel container that encloses the nuclear core.

Link Copied
By James M. Acton
Published on Mar 25, 2011
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: CBS

CBS' Katie Couric spoke with Carnegie's James Acton on what the higher levels of radiation found in Japan and a possible reactor breach could mean for the country. Responding to reports of increased levels of radiation found in the turbine room outside of reactor 3 of Japan’s Daiichi nuclear reactor in Fukushima, Acton explained that the location of the water and several other factors suggest that it is more likely that the leak is coming from somewhere else and not the reactor pressure vessel.
 

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

  • Paper
    Nuclear Weapons and the Future of American Power

      James M. Acton, Ankit Panda

  • Commentary
    The Latest Iran Deal Ignores the Lessons of the Past

      James M. Acton

James M. Acton
Jessica T. Mathews Chair, Co-director, Nuclear Policy Program
James M. Acton
Nuclear PolicyNuclear EnergyEast AsiaJapan

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

  • Trump and MBS walking across a stage
    Commentary
    Emissary
    Is the U.S.-Saudi Nuclear Deal Moving From the Gold Standard to a Gilded Standard?

    Congress should ask tough questions about the agreement’s more unique features and whether they advance U.S. interests or compromise them.

      • Jane Darby Menton

      Jane Darby Menton

  • Black-and-white photo of the nuclear cargo ship NS Savannah.
    Commentary
    Emissary
    A Nuclear Odyssey at Sea

    Nuclear and maritime communities face a long and challenging journey to deploy commercial nuclear applications at sea. 

      Jamie Kwong, Toby Dalton

  • Japanese troops take part in a counter-landing live fire exercise as part of the annual Balikatan joint military drills on May 04, 2026 in Laoag, Ilocos Norte province, Philippines.
    Article
    The Two Logics Driving Japan’s Security Policy

    Japan’s revision of its three strategic documents reflects an intention to keep the United States engaged in the region while Japan fills any vacuums of U.S. power to preserve the Indo-Pacific order.

      • Ryo Sahashi

      Ryo Sahashi

  • Robot arm with disposable test tube virus sampling in laboratory
    Commentary
    Caught in the Middle: Chinese Biotech Firms’ Divergent Responses to U.S. Sanctions

    Chinese biotech companies have been on the receiving end of U.S. economic coercion. Yet their responses have differed significantly because firm and state interests are not uniformly aligned. For Washington, treating all Chinese tech firms the same, irrespective of their actual interests, risks pushing them farther into Beijing’s corner.

      Xue Gong

  • Two people in blue PPE standing over large metal rolls
    Commentary
    Emissary
    Inside the Global Race to Erode a Battery Manufacturing Monopoly

    Over the past decade, China has moved from marginal player to major producer of all things batteries. The United States, Europe, and others are aiming to balance the market.

      Milo McBride

Get more news and analysis from
Carnegie Endowment for International Peace
Carnegie global logo, stacked
1779 Massachusetts Avenue NWWashington, DC, 20036-2103Phone: 202 483 7600
  • 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.