Answering this question could take a book, but I'll try to respond briefly. For examples, one simply needs to look at the world before the 18th century, since there was no concept of the nation then. When it was introduced into 18th-19th century Europe, the nation arguably served a positive purpose. It helped people transcend religious differences and unite against the king (e.g. the French Revolution and the Rights of Man). But in the 20th -21st centuries (a century of many genocides driven by nationalism), I think it is clear that the idea of the nation does more harm than good. It divides people rather than uniting them. Key differences between a country and a nation include open borders and no passport. Peoples' rights would not depend on their citizenship status in a country that is not a nation. The international geopolitical order would make it very difficult for a country to survive that did not conceive of itself as a nation, but that shouldn't stop us from moving towards at least partial denationalization. Europe is doing this to some extent with their Schengen visa for example (which break down borders between European nations), but that should be extended to the entire world. In Israel/Palestine it means that the state would make no distinction between Jews and Palestinians. Hope that clarifies! A fuller answer would require a book but perhaps I can write a Medium post on the topic someday.