Government 2.0
Out of all the forms of societal organization (the tribe, bands, the Kingdom, The City-State, The Empire, etc), the Nation-State seems to have been the most stable and successful way of human association. The competition was somewhat settled after WWI with the collapse of the last of the great empires, like the Ottoman, and Austro-Hungarian one. But " most stable and successful " does not mean absolutely stable nor absolutely successful. Everything that's built by a human is bound to be flawed. From the concept of the family, to the effectiveness of vaccines, to the engineering of the Boeing 737 MAX . One of the most important functions of leadership in Nation-State is to keep stability. Without it, no society can sustain itself. Social stability depends on trust and legitimacy of its institutions. Economic activity rests on the bedrock of rule of law and contract enforcement. No one would venture to embark on a business if marauders will destroy your property on a whim