Third, the Paris Agreement distinguishes countries in contextual and often subtle ways. We define this “subtle differentiation” as a subtlety compared to certain subgroups of countries (e.g.B Least Developed Countries (LDCs) and Small Island Developing States (SIDS)) on certain topics (e.g.B. adaptation financing) and/or procedures (e.g. B calendars and reports). Today, that future could be threatened, as President Donald Trump prepares to withdraw the United States from the deal — a step he can only legally take after the next presidential election — as part of a larger effort to reduce America`s decades-old environmental policy. [Clarification needed] In addition, annual carbon emissions in 2017 are estimated at 40 billion tons per year. . . .