Diversity of thought as ‘mission critical’: Knowledge, politics and power in UK national security policymaking

Abstract The idea that diversity and inclusion in policymaking institutions is a national security imperative because it enhances ‘diversity of thought’ has proliferated among policymakers in recent years. Building on critical, feminist and postcolonial scholarship arguing that constructions of gender, race and class undergird hegemonic militaristic and colonial approaches to security, this article analyses how the discourse on diversity of thought occasionally challenges, but more often reinforces these hegemonic approaches. Based on interviews with UK civil servants, the article explores how this discourse, and consequent measures to promote diversity of thought by creating a more diverse and inclusive workplace, have developed in the UK national security community, analysing how officials interpret the relationship between demographic diversity and knowledge production. Using feminist epistemologies as a heuristic, the article argues that although some officials view this agenda as a means to challenge militaristic thinking, the commonplace exclusion of structural power analysis places hard constraints on its ability to achieve this end and has enabled its recuperation by far-right anti-equality agendas. Ultimately, the politics of diversity are insufficient to overcome UK national security institutions’ commitment to militarism, which demands attention to the material structures that make militaristic approaches to security appear necessary.