The "Contemporary Social Science" in its entirety, faces the "General Loss of Validity", a product of its evident failure and incompetence, evidenced by the catastrophe facing humanity, which is approaching its inexorable extinction. To regain lost validity, it must undergo a profound "Reconstruction", concentrated on the development of a new investigative agenda, both for "POLITICAL SCIENCE" and "GEOPOLITICS", which should be addressed as the nucleus of "Study", the most significant issues for the human species as they are; The "Fundamental Global Geostrategic Imperatives", and the study of "Geostrategies", which are the means through which these "Imperatives" are implemented and/or executed. The present study constitutes an exhortation to the "Reconstruction" of social science as a whole and one of the initial steps in the development of this task.