Kenneth Waltz’s neorealism has arguably been the most dominant international theory for the last three decades, although its popularity has decreased. Amitai Etzioni has recently criticized (neo)realism, arguing that not only military and economic factors but, increasingly, also normative ones shape international relations. Etzioni’s challenge, one ‘from within’, is of particular interest and relevance, as it shares with Waltz’s theory an intellectual rootedness in microeconomics, yet differs from neorealism in abandoning the prevailing neoclassical paradigm in favor of a communitarian, or social, one. This article argues that Etzioni’s contribution should be taken as an ‘I&We’ communitarian upgrading of Waltz’s neorealist theory. It pr...