Barry Buzan & Lene Hansen (2009) note that the first glimmer of concern with women and security within international relations and peace studies was a site of tension: in the 1970s and into the 1980s, women were not on the agenda of international relations at all. Peace theorists embraced the concept of structural violence but also excluded women from their discussions. There are now new inclusion/exclusion tensions within feminist international relations and its security wing. In this article I address two tensions: (1) concern to maintain the stance that security is a peace issue as some venture systematically into feminist war studies, and (2) a tendency to issue harsh judgements of feminists whose views challenge the accommodation of cultural difference. I briefly consider examples of these two tensions and suggest ways to work with and beyond the structure of international relations to ‘evolve’ (feminist) security studies further.