Withdrawing from the United Nations Paris Climate Accord is one of more than 100 electoral campaign promises that Donald Trump made. By delivering on that promise, the US joined Nicaragua and Syria, the only countries that did not sign the agreement.
Nicaragua’s decision to not sign was not due to any indifference or denialism of climate change. Rather, the Central American nation’s reason was the contrary. It was based on its view that the agreement was not enough to address the climate crisis. Syria is in the middle of civil war and under US and European sanctions.