When Donald Trump entered office, the direction of U.S. climate policy changed quickly and sharply. The administration moved to pull the country out of the Paris Agreement, reduced funding tied to international development, tightened constraints around climate scientists, and pushed to undo rules that treated carbon dioxide as a pollutant, all while loosening environmental regulations more broadly. The overall posture was sweeping and forceful, sending an unmistakable signal to governments, institutions, and markets watching closely.
It remains too soon to say how fully every measure will be carried through in practice, but the effects have already started to show. One immediate response across much of the international community has been a clear sense of disappointment. For years, the United States helped shape climate governance through agenda-setting, financial contributions, and technological leadership. After Trump’s election, climate topics that once commanded sustained global attention began to slip down the priority list, and the change in tone was hard to miss.
That disappointment was visible among international organizations, small island states, African countries, and many non-governmental groups during COP29. Yet even with obvious dissatisfaction, public confrontation largely failed to materialize. Few actors chose to openly criticize, much less condemn, the U.S. reversal. The restraint reflects a recognition that no single country or institution can simply replace what U.S. participation represented. Additional emissions linked to this approach currently lack adequate offsets, and a core ambition that developed countries would “lead” in mobilizing
300
300 billion dollars annually for developing countries by
2035
2035 becomes far harder to realize under these conditions. In the same atmosphere, the six most influential U.S. banks left the “Climate Finance Club,” and capital flowing into climate-related sectors noticeably thinned.
Negotiating Blocs Reconsider Their Promises
As Washington stepped back, other major players gained fresh reasons to soften their own climate positions. In Europe, multiple pressures, including the Russia-Ukraine war and heightened concerns over energy security, were already weighing on the European Union’s climate agenda. Against that backdrop, political willingness to finance multilateral mechanisms weakened, the shift toward electric vehicles slowed, and deadlines associated with phasing out fossil fuels began to loosen. Even tools meant to protect and reinforce climate ambition, such as the carbon border adjustment mechanism, appeared more likely to encounter new complications.
At the same time, the breakdown in Sino-U.S. climate cooperation and policy coordination has increased external pressure on China to assume a leading role. The expectation that China should fill the gap has become more pronounced, even as China is urged to maintain its long-standing principles. Other emerging economies, including India and Brazil, are widely anticipated to follow a similar logic in weighing climate action against domestic development needs. Meanwhile, multilateral efforts that the United States once led or actively supported, including climate summits and methane reduction schemes, have lost some momentum and appear less active than before.
This shifting center of gravity has also affected countries that tend to align with the United States. Canada, Japan, and Australia have visibly moved their positions closer to Washington’s. Elsewhere, initiatives that rely on sustained coordination and confidence have run into headwinds. Indonesia, South Africa, and Vietnam, for example, have faced added difficulty within the “Energy Transition Partnership” framework. Inside the United States, the absence of steady federal direction has also slowed emissions cuts and clean energy progress at the state level. In principle, the world’s trajectory is supposed to move from a carbon-based economy toward carbon neutrality and net-zero emissions as hallmarks of a new era. Trump’s approach challenged that framing directly, portraying net-zero not as a shared destination worth pursuing but as a drag on national development, and that reframing has pushed many countries, particularly in the Global South and even some in the North, to rethink how they balance climate priorities with economic growth.
Why Global Climate Governance Still Holds
Even with lowered intensity and a diminished policy spotlight, international climate governance has not fallen apart. The architecture remains standing, and the Paris Agreement framework continues to function. Rather than collapsing under geopolitical strain, it has persisted while widening its scope, strengthening how national commitments are verified, and advancing the evolution of financial mechanisms. The overall system looks less energized from the top than it did at earlier moments, but it remains recognizable and operational.
In place of one dominant engine, cooperation has increasingly depended on multiple tracks running in parallel. Collaboration between China and the EU has strengthened, as have ties between China and Japan and South Korea, and between China and African partners. Broader work across Southeast Asia, Africa, and Latin America has also expanded, particularly around adaptation priorities and the development of multi-hazard early warning systems. These efforts illustrate how climate governance can continue through practical cooperation even when a former leader’s engagement becomes uncertain.
The persistence is also visible below the national level. U.S. states and cities, along with urban networks such as C40, continue pushing deep decarbonization efforts and sharing best practices. At the same time, the clean energy industry, including electric vehicles, solar panels, and wind turbines, is increasingly viewed not only as an environmental choice but as a pillar of energy security and national competitiveness. That shift matters because it suggests a structural reason the system can endure. When top-down momentum fades, bottom-up action often expands to fill some of the space, and in a polarized U.S. policy environment, that may be one of the few workable ways the world can keep adapting without waiting for a single capital to set the pace.
