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  1. Chang Ka Mun

    Chang Ka Mun

    Writing for PS since 2016
    1 Commentary

    Chang Ka Mun is managing director of the Fung Business Intelligence Centre of the Li & Fung group of companies.

  2. Sigrid Kaag

    Sigrid Kaag

    1 Commentary

    Sigrid Kaag is Minister for Foreign Trade and Development Cooperation for the Netherlands.

  3. Malado Kaba

    Malado Kaba

    Writing for PS since 2022
    2 Commentaries

    Malado Kaba, Director of the Gender, Women, and Civil Society Department at the African Development Bank and Managing Director of Falémé Conseil, served as the first female minister of economy and finance of the Republic of Guinea.

  4. Omar Kabbaj

    Writing for PS since 2004
    1 Commentary

    Omar Kabbaj is President of the African Development Bank, Tunis.

  5. Donald P. Kaberuka

    Donald P. Kaberuka

    Writing for PS since 2011
    10 Commentaries

    Donald P. Kaberuka, a former president of the African Development Bank, is Board Chair of the Global Fund to Fight AIDS, Tuberculosis, and Malaria.

  6. Jane Kabubo-Mariara

    Jane Kabubo-Mariara

    Writing for PS since 2023
    3 Commentaries

    Jane Kabubo-Mariara is Executive Director of the Partnership for Economic Policy, Professor of Economics at the University of Nairobi, President of the African Society for Ecological Economics, and a member of the Central Bank of Kenya’s Monetary Policy Committee and the Club of Rome’s Earth4All 21st Century Transformational Economics Commission.

  7. Steve Kaczynski

    Steve Kaczynski

    Writing for PS since 2024
    1 Commentary

    Steve Kaczynski, a former manager of companywide communications at Progressive Insurance and manager of brand communications at Nestlé, is a Web3 entrepreneur, consultant, and commentator and the co-author (with Scott Duke Kominers) of The Everything Token: How NFTs and Web3 Will Transform the Way We Buy, Sell, and Create (Portfolio, 2024).

  8. Paul Kagame

    Paul Kagame

    Writing for PS since 2012
    4 Commentaries

    Paul Kagame is President of Rwanda.

  9. Guy Kahane

    Guy Kahane

    Writing for PS since 2011
    1 Commentary

    Guy Kahane is Deputy Director of the Uehiro Centre for Practical Ethics, Faculty of Philosophy, University of Oxford.

  10. Suzanne Kahn

    Suzanne Kahn

    Writing for PS since 2024
    1 Commentary

    Suzanne Kahn, a former research analyst at 32BJ SEIU, is Vice President of the think tank at the Roosevelt Institute.

  11. David Kaiser

    Writing for PS since 2012
    1 Commentary

    David Kaiser is Professor of the History of Science at the Massachusetts Institute of Technology. His latest book is How the Hippies Saved Physics: Science, Counterculture, and the Quantum Revival.

  12. Karl Kaiser

    Karl Kaiser

    Writing for PS since 2013
    1 Commentary

    Karl Kaiser is a former director of the German Council on Foreign Relations, an adjunct professor at Harvard’s John F. Kennedy School, and Director of the Program on Transatlantic Relations at the Weatherhead Center for International Affairs.

  13. Wu’er Kaixi

    Wu’er Kaixi

    Writing for PS since 2019
    1 Commentary

    Wu’er Kaixi, a member of the Reporters Without Borders (RSF) Emeritus Board, was a leader of the Tiananmen Square protest in 1989.

  14. Sophia Kalantzakos

    Sophia Kalantzakos

    Writing for PS since 2020
    2 Commentaries

    Sophia Kalantzakos, Professor of Environmental Studies and Public Policy at New York University Abu Dhabi, is the founding head of the Geopolitics and Ecology of Himalayan Water project and author of China and the Geopolitics of Rare Earths (Oxford University Press, 2017) and The EU, US, and China Tackling Climate Change: Policies and Alliances for the Anthropocene (Routledge, 2017).

  15. Rashad Kaldany

    Writing for PS since 2012
    1 Commentary

  1. brown111_ALAIN JOCARDPOOLAFP via Getty Images_mpox ALAIN JOCARD/POOL/AFP via Getty Images

    The High Cost of the Netherlands’ Mpox Vaccine Hoarding

    Gordon Brown condemns European populists’ failure to heed the lessons of the COVID-19 pandemic.
  2. charap3_ TATYANA MAKEYEVAAFP via Getty Images)_kursk TATYANA MAKEYEVA/AFP via Getty Images)

    How to Make the Most of the Kursk Gambit

    Samuel Charap & Charles A. Kupchan think Ukraine and its partners have a big opportunity to start working toward a negotiated end to the war.
  3. leonard104_SurkovDimitriGetty Images_USEUflag SurkovDimitri/Getty Images

    The US Election Will Overturn Europe’s Strategic Status Quo

    Mark Leonard worries that Europeans are unprepared for whoever will succeed US President Joe Biden.
  4. mazzucato71 GettyImages-2159148172_AW Getty Images

    The Water-Security Crisis

    Mariana Mazzucato, et al.

    Increasingly severe water shortages represent a human-made crisis that can be resolved through human interventions. The situation demands new thinking about the economics of this critical resource and how to manage it through mission-oriented strategies that span all levels of governance.

    call attention to a global problem that demands far more attention from policymakers at all levels.
  5. reyna1_Martin Schuttpicture alliance via Getty Images_ev green deal Martin Schutt/picture alliance via Getty Images

    The European Green Deal Is Already Benefiting Consumers

    Agustín Reyna rejects the misguided notion that voters are indifferent to environmental concerns.
  6. bremmer34_Anna MoneymakerGetty Images_harrissouthkorea Anna Moneymaker/Getty Images

    What Is Kamala Harris’s Foreign Policy?

    Ian Bremmer

    Although Kamala Harris is largely aligned with Joe Biden on many global and strategic issues, her unique worldview promises a distinct form of leadership on the international stage. Not only would US foreign policy shift under a Harris administration; it could change in highly consequential ways.

    considers how the Democratic presidential nominees' views compare to Joe Biden's.
  7. anheier25_JOHN MACDOUGALLAFP via Getty Images_afd JOHN MACDOUGALL/AFP via Getty Images

    Will the German Center Hold?

    Helmut K. Anheier considers what is driving support for extremist parties in the country’s eastern states.
  8. delong263_MEGAN JELINGERAFP via Getty Images_USindustrysteel Megan Jelinger/AFP via Getty Images

    America Has No Alternative to Industrial Policy

    J. Bradford DeLong thinks new threats to economic security outweigh the reasons for opposing government-led development.
  9. nye261_Kevin DietschGetty Images_us election Kevin Dietsch/Getty Images

    US Foreign Policy in 2025

    Joseph S. Nye, Jr. compares the two presidential candidates’ attitudes and positions on major global issues.

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