<p>This paper examines the complex legal challenges arising from the establishment of human settlements on the Moon, distinguishing between short-term research facilities and permanent habitations. Through comprehensive analysis of existing international space law, particularly the Outer Space Treaty and other relevant instruments, this study identifies critical gaps in the regulatory framework governing sovereignty, property rights, nationality, jurisdiction, liability, environmental protection, and dispute resolution. As lunar settlement transitions from speculation to imminent reality, the inadequacies of current legal architecture threaten to undermine peaceful cooperation and equitable resource utilization. This paper proposes pathways toward developing a sustainable legal regime capable of addressing both immediate operational concerns and long-term constitutional questions inherent in extraterrestrial human presence. The paper is grounded in the belief that the existing legal framework is capable, up to a certain extent, to deal with the issues emerging in the context of short-term missions, while it appears largely inadequate to handle problems arising within long-term settlements. This appraisal leads the author to conclude that, at some point in the future, it might be necessary for the international community to reconsider the functionality and flexibility of the existing legal framework applicable to lunar activities and to elaborate a new set of rules specifically designed to address challenges that were foreseen when the space treaties were drafted.</p>