The study aims to identify the role played by the UN and the UNSC in the Yemeni crisis. Through examining, the efforts of the envoys of the Secretary-General of the UN and the UNSCRs issued regarding the Yemeni Crisis, the agreements it sponsored, and the extent of their implementation on the ground, in addition to reviewing the role of the UN in the humanitarian field and solutions and proposals to resolve the crisis. The study argues that the role of the UN in the Yemeni crisis, despite its importance, has been characterized by general weakness, whether through the performance of its envoys, the implementation of the UNSCRs issued regarding the crisis, or the agreements sponsored by the UN. This weakness resulted in the continuation of the crisis. It assumes that there are reasons that prevented the implementation of these resolutions. Therefore, the study sheds light on measuring the extent to which these resolutions and agreements are implemented on the ground. The study also analyzed the reasons that prevented the implementation of UNSCRs and finally developed solutions and proposals for the Yemeni crisis. The study relied on the Neorealism theory to explain the conflict of superpowers over interests and influence through the Yemeni crisis and how this conflict and its regional alliances contributed to disrupting the efforts of the UN to resolve the crisis. It also sought the theory of constructivism to find alternative solutions and proposals to the crisis. The study used the descriptive analytical approach to analyze the extent of implementation of UNSCRs and the results and reasons for non-implementation. The study concluded that the majority of UNSCRs and the agreements it sponsored were not implemented, and that failure to implement these resolutions led to the continuation of the war. It also concluded that multiple reasons hindered the implementation of these resolutions and weakened the role of the UN in general. Some of these reasons are related to the performance of the UN itself, some are related to the role of the great powers, and a third part of the reasons are regional and local. The study contributed, along with other previous studies, to diagnosing the reasons for the failure of the United Nations to achieve peace in Yemen and developing proposals that would make these efforts successful to reach a lasting and comprehensive peace.