Which political entities should the international community recognize as member states--granting them the rights and powers of statehood and entitling them to participate in formulating, adjudicating, and implementing international law? What criteria should it use, and are those criteria defensible? From Kosovo, Palestine, and Taiwan to South Sudan, Scotland, South Ossetia, Abkhazia, and Catalonia, these questions continuously arise and constantly challenge the international community for a consistent, principled stance. In response to this challenge, Chris Naticchia offers a social contract...