Chapter 7 shows that, from a legal perspective, a modern concert is at odds with both the internal legitimacy of states and the international legal order. The author argues that a concert, while being neutral in its relationship to positive law, would inherently undermine existing structures without offering clear advantages that justify a consolidation, which is, after all, fraught with risks. According to this pessimistic assessment, a concert would not enhance the legitimacy of the current international order but would further contribute to the trend of informal decision making and fragmentation.