President Donald Trump said in June that the U.S. would exit the Paris climate accord, while leaving open the possibility of negotiating the deal or crafting an “entirely new transaction on terms that are fair to the United States.” In recent days, American officials said the U.S. could remain in the climate accord if it could revise its commitments under the pact, raising hopes among the agreement’s supporters.

Here’s a closer look at the Paris agreement and the process of withdrawal from it.

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