In this research work the author initially introduces two important notions : Fuzzy Sustainable Development & Fuzzy Sustainable Development Goals; and then proposes a major urgent Reform of United Nations (UN) for a huge benefit of our planet. All the three AI-based secret-voting methods which were introduced in the “FIFA Constitution” proposed in , are used in this proposed Reform of UN (called by PRUN) imposing the mandatory norm that all votings in UN must be secret-voting, not ‘raise-hand’ voting. One deeply hidden Paralysis Situation of the UN is that the existing concept of “Sustainable Development” which presently being followed by ECOSOC & the World is an excellent concept, but not a ‘precisely’ well defined concept for a UNIQUE mathematical modelling of it required for UN, for the Researchers, and World Activists. For any development D, the “amount of sustainability α is different in different countries”, which is fact on reality and this proposition needs serious attention by UN. Out of 17 existing Sustainable Development Goals (SDGs), the two Goals Goal-1 and Goal-2 are having some error and consequently these two SDGs are revised. Three new very important SDGs are introduced which are Goal-18, Goal-19 and Goal-20, without which the UN can never protect and save our planet upto satisfaction, although it is fact that ECOSOC has been doing very hardwork on this subject for our planet. It is justified that the grand subject ‘Sustainable Development’ is very much an Engineering, AI and Soft-computing subject compared to the subjects Sociology & Economics and hence ECOSOC is not the sufficient body or appropriate body of UN which can deal with this grand subject with complete justice and fairness. The wrong practices of “Reverse Democracy” in UN is unearthed by an example. The life and health of our planet is solely dependent upon the UN activities, each and every activity must be sustainable development activity. Consequently the proposed Reform of United Nations (UN) will be much more strategic and disciplined to solve the everyday issues and problems of our earth in excellent & optimal ways.

FSD, SDG, FSDG, Fuzzy Voting, Intuitionistic Fuzzy Voting, reverse democracy, PRUN