1. A 2015 deal drafted in Paris and signed by most nations, it was a pledge for nations to actively fight to keep the rising global temperature below 1.5 Celsius;
2. Signed by President Obama it was one of the first agreements that Trump vowed to break during his presidency;
3. Something that Trump viewed as a restricting attack on US sovereignty and impediment to US business interest due to a made-up reason that was really nothing more than a Chinese hoax;
4. An agreement that Trump may confusingly believe only protects the people of Paris, France and nowhere else in the world.
See also: Global Warming