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Experts React: Progress and Setbacks at COP30

COP30 showcased noteworthy progress while exposing persistent roadblocks in global climate diplomacy. CSIS experts react to the conference’s most significant outcomes and their implications for the future of climate, energy, health, development, and the COP process at large.

Commentary by Leslie Abrahams, Jane Nakano, Noam Unger, J. Stephen Morrison, Katherine E. Bliss, Mathias Zacarias, Ray Cai, and Alexis Burns — November 25, 2025

A New Landscape for Development: Examining Impacts, Capabilities, and Opportunities

Cuts to foreign assistance have been among the most sweeping changes of the second Trump administration. This compendium dives deep into the impacts on fields across the development ecosystem and potential opportunities within this new landscape.

Digital Report by Hadeil Ali, Andrew Friedman, Noam Unger, J. Stephen Morrison, Katherine E. Bliss, Romina Bandura, Caitlin Welsh, David Michel, Rose Parker, and Joely Virzi — November 13, 2025

Three Steps to Protect the United States Against Extreme Heat

The CSIS Bipartisan Alliance for Global Health Security Working Group on Climate and Health recommends urgent action on extreme heat to protect Americans, strengthen preparedness against heat waves and extreme weather events, and ensure U.S. economic and national security.

Brief by J. Stephen Morrison, Katherine E. Bliss, and Christina E. Zielke — November 5, 2025

A New Era in Health Security

The CSIS Bipartisan Alliance for Global Health Security presses the administration and Congress to strengthen health security investments to ensure Americans remain protected, U.S. innovation remains competitive, and U.S. programs become more efficient and sustainable.

Brief by J. Stephen Morrison, Michaela Simoneau, Katherine E. Bliss, Enoh T. Ebong, Elizabeth "Beth" Cameron, Paul Friedrichs, Stephanie Psaki, Stewart Simonson, Thomas Cullison, Nikolaj Gilbert, Heidi J. Larson, Raj Panjabi, Carolyn Reynolds, Leonard Rubenstein, and Jeffrey Sturchio — July 11, 2025

Vaccine Exemptions for Kids Are on the Rise

The ongoing measles outbreak—the largest since 2019—threatens unvaccinated children across the United States, where the rise of nonmedical vaccine exemptions in kindergarteners has widened gaps in immunity to the disease. 

Analysis by Priya Chainani and Katherine E. Bliss — May 20, 2025

PEPFAR’s Golden Era Is Over. It Urgently Needs a Five-Year Transition Plan

There is no path back to PEPFAR’s old model, but with political will and skilled leadership, it is possible to navigate PEPFAR’s reduced capabilities and mission, manage current shocks, ensure an orderly handoff, and achieve an accelerated, five-year transition plan.

Critical Questions by Jirair Ratevosian, J. Stephen Morrison, and Katherine E. Bliss — May 16, 2025

A Quarter-Century of Disease Prevention Efforts at Risk

Not only does cutting support for national and global immunization programs threaten the U.S. measles elimination certification, it also limits economic growth, undermines the viability of U.S. trading partners, and imperils the health of children around the world.

Commentary by Katherine E. Bliss — April 2, 2025

The Health-Climate-Security Triad

Imperiled health is the human face of climate change. The climate crisis is increasingly recognized as a health crisis, marked by rising mortality, costly illnesses, and heightened risks of new biological pathogens that together threaten U.S. national security interests.

Commentary by J. Stephen Morrison and Katherine E. Bliss — January 31, 2025

To Navigate Global Health Replenishments, Treat Them as U.S. National Security Tools

Navigating the complex cycle of global health replenishments poses early challenges for the next administration. Success will rest on forging a new, bipartisan, and reformist compact, placing global health commitments squarely in the U.S. national security strategy.

Commentary by Katherine E. Bliss and J. Stephen Morrison — December 18, 2024