Chapter 1 provides the research framing of this book. First, it discusses relevant academic works on arenas and combines them with the author’s own empirical insights. It defines ‘security’ and describes the two key dimensions of actors and their interactions. Second, descriptive commonalities and differences in ordering practices in the local security arena lead to analytical insights that call for more in-depth investigation – namely, the respective roles and interactions of state, non-state, and international actors; the dividing lines between inner and outer circles in the local arena; and different relations between peripheral local cases and their respective centres. In the methodological section, the chapter explains the selection of these three countries and the local arenas within them, how data was gathered through an explorative mix of methods, and its analysis through process tracing and the Comparative Area Studies approach.