The UNFCCC is a 1992 international treaty aimed at preventing dangerous human interference with the climate system. It is the parent treaty of the Paris Agreement. Withdrawing from it means the U.S. is exiting the foundational global framework for climate action.

The Paris Agreement is a 2015 global treaty to limit global warming. President Trump withdrew the U.S. from it in 2017, but President Biden rejoined it in 2021. Trump’s current move to withdraw from the parent UNFCCC treaty is a much more drastic step than just leaving the Paris Agreement.

The United Nations operates through various specialized agencies and panels that set global standards. By leaving these, the U.S. loses its voice in shaping international rules on everything from human rights to environmental protection.

Isolationism is a policy where a country focuses only on its own internal affairs and avoids international alliances. While the U.S. followed this before World War II, the current shift is seen as a reversal of decades of global leadership.

The WHO is the UN’s health agency. It coordinates global responses to health emergencies and funds critical health programs in poor countries. The U.S. has historically been the WHO’s largest financial contributor, so its withdrawal leaves a massive funding gap.

For decades, the U.S. has been the main leader and funder for global projects. By providing the most money and expert advice, U.S. organisations have shaped how the world handles issues like climate change and human rights.

When a major power like the U.S. stops leading, it creates a ‘vacuum.’ Other countries like China and Russia often try to fill this gap to increase their own influence, which can change global rules on trade, human rights, and security.

A ‘trade war’ happens when countries put taxes (tariffs) on each other’s goods. President Trump used tariffs to pressure countries like China to change their trade rules. While this was meant to help the U.S., it often made global trade more difficult and expensive for everyone.

The ‘global commons’ refers to parts of the planet that no single country owns, like the atmosphere and the high seas. Protecting them requires all countries to work together. If countries only focus on their own interests, these shared resources could be destroyed.

Ethno-nationalism often leads to ‘us vs them’ thinking. When a powerful country like the U.S. adopts this view, it can encourage similar movements in other countries, leading to more global conflict and less cooperation.

The world is currently dealing with ‘polycrisis’—multiple major problems happening at once. Solving climate change and recovering from a pandemic requires all countries to cooperate. If the U.S. withdraws, these crises could become much worse.