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  1. John O'Brennan

    John O'Brennan

    Writing for PS since 2008
    6 Commentaries

    John O’ Brennan is Director of European Studies and a lecturer in European Politics at the National University of Ireland Maynooth (NUIM).

  2. Gus O'Donnell

    Gus O'Donnell

    Writing for PS since 2014
    2 Commentaries

    Gus O’Donnell, former Cabinet Secretary to Tony Blair, Gordon Brown, and David Cameron, is now Chairman of Frontier Economics and a member of the UK House of Lords.

  3. Megan O'Donnell

    Megan O'Donnell

    Writing for PS since 2022
    1 Commentary

    Megan O’Donnell leads the Center for Global Development’s COVID-19 Gender and Development Initiative.

  4. Stephen O'Driscoll

    Stephen O'Driscoll

    Writing for PS since 2022
    1 Commentary

    Stephen O’Driscoll is Head of Environment, Climate, and Social Policy at the European Investment Bank.

  5. Michael O'Hanlon

    Michael O'Hanlon

    Writing for PS since 2014
    1 Commentary

    Michael O’Hanlon is a senior fellow at the Brookings Institution.

  6. Shane O'Mara

    Shane O'Mara

    Writing for PS since 2016
    1 Commentary

    Shane O’Mara is Professor of Experimental Brain Research and Wellcome Trust Senior Investigator at the Institute of Neuroscience at Trinity College, and the author of Why Torture Doesn't Work: The Neuroscience of Interrogation.

  7. Jim O'Neill

    Jim O'Neill

    Writing for PS since 2008
    110 Commentaries

    Jim O’Neill, a former chairman of Goldman Sachs Asset Management and a former UK treasury minister, is a member of the Pan-European Commission on Health and Sustainable Development.

  8. Tim O'Reilly

    Tim O'Reilly

    Writing for PS since 2021
    1 Commentary

    Tim O’Reilly is Visiting Professor of Practice at the UCL Institute for Innovation and Public Purpose.

  9. Dara O'Rourke

    Writing for PS since 2001
    1 Commentary

    Professor of Politics at MIT.

  10. Kevin Hjortshøj O'Rourke

    Kevin Hjortshøj O'Rourke

    Writing for PS since 2011
    3 Commentaries

    Kevin Hjortshøj O’Rourke is Professor of Economic History and Fellow of All Souls College, University of Oxford.

  11. Fintan O'Toole is the Leonard L. Milberg Visiting Lecturer in Irish Letters at Princeton University, columnist at the Irish Times, and the author of Heroic Failure: Brexit and the Politics of Pain.  


  12. Nawaf Obaid

    Nawaf Obaid

    Writing for PS since 2013
    2 Commentaries

    Nawaf Obaid is a visiting fellow at the Belfer Center for Science and International Affairs at Harvard University’s Kennedy School of Government.

  13. Olusegun Obasanjo

    Olusegun Obasanjo

    Writing for PS since 2012
    6 Commentaries

    Olusegun Obasanjo, a former president of Nigeria (1976-79, 1999-2007), is a commissioner of the Global Commission on Drug Policy.

  14. Seki Obata

    Seki Obata

    Writing for PS since 2015
    1 Commentary

    Seki Obata is a professor at Keio University's Graduate School of Business Administration and a former official in Japan’s Ministry of Finance.

  15. Calli Obern

    Calli Obern

    Writing for PS since 2022
    1 Commentary

    Calli Obern, a master’s candidate in international policy at Stanford University, is a research fellow at Ecospherics, an advisory firm focusing on environmental and national-security issues.

  1. op_campanella10_WANG ZHAOAFP via Getty Images_USChina Wang Zhao/AFP via Getty Images
    Subscriber Exclusive

    Understanding the US-China Rivalry

    Edoardo Campanella

    US Speaker of the House Nancy Pelosi’s visit to Taiwan may have widened the divide between the United States and China even further. But the Sino-American rivalry has been building for years, if not decades, alongside each power's evolving role in the international system.

    reviews five recent books on the recent history, and worrisome future, of the Sino-American relationship.
  2. three flags Hung Chin Liu/Getty Images
    Subscriber Exclusive

    Will US-China Tensions Boil Over?

    A toxic mix of mutual distrust and rising nationalism – with Taiwan the immediate flash point – has brought Sino-American relations to their lowest point in decades. While neither China nor the United States appears to want a military conflict, we asked PS commentators whether the two powers might nonetheless stumble into one.

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