Throughout the 1990s, the study of nationalism, and state and national identities gained momentum in the discipline of International Relations (IR). With the emergence of ethno-national claims across the globe and the dissolution of multinational states, authors sought to comprehend what drove national interests and behaviors both domestically and internationally. Recently, literature on identities and cultures has again been burgeoning—with one major difference. In the 1990s, national identities and cultures were largely depicted as uniform, cohesive ‘units’ that would explain states’ behaviors and interests. Literature on strategic culture is a relevant case in point. Currently, authors seem to be focusing instead on the diversity of identities and recognition of difference. Andrew Hurrell’s decade-long research agenda on pluralism and global international relations is an illustrative example.