Security Strategies of Middle Powers in the Asia Pacific examines what drives the different regional security strategies of four middle powers in the Asia Pacific: Australia, Indonesia, South Korea and Malaysia. Drawing on the extant middle power literature, the authors argue that the regional security strategies of middle powers could take two forms, namely, functional or normative. A functional strategy means that the middle power targets its resources to address a specific problem that it has a high level of interest in, while a normative strategy refers to a focus on promoting general behavioural standards and confidence building at the multilateral level. This book argues that whether a middle power ultimately employs a more functional or normative regional security strategy depends on its resource availability and strategic environment.