The problem with Brexit doesn’t only relate to the United Kingdom but also to the structure of the European Union. More specifically, the organic evolution of the European Union is based on topological concepts, such as the avoidance of a hole, namely of a zone which is no longer controlled by the hyperstucture. Also it also seeks for boundaries’ minimization and maximization of space area in the sense of an isoperimetric problem. This approach explains the simultaneous accession of the United Kingdom and of Ireland, of Spain and Portugal or even also the Baltic countries. We must also understand that these inventions fall within topostrategic concepts which armor the great strategy of the European Union. One of its facts is access to the Atlantic Ocean with which it combines the NATO approach since it is this ocean which consists of the center of this hyperstructure. With the united front of France, Belgium, Germany and of Denmark, the European Union had to avoid the british obstruction to the atlantic front and for this reason it integrated it in 1973 to the European Union of 1957 so that its members become 9. Now with Brexit, there isn’t only the issue of North Ireland which arises but also that of the access to the Atlantic Ocean. For this reason the European Union will not facilitate the European Union at any point. When it announces that it will examine the Europeans as other immigrants and nothing more, it is understood why the Europeans put the Prime Minister in her place and told her to review her proposals because they are not going to undermine the internal market neither will they let Ireland to God’s mercy. So the great strategy consists of the substrate of the discussions, which cannot be superficial and shallow due to the strategic importance of the case for the future of the European Union as long as there isn’t a second referendum.