India's emergence of a great power has sensitized its regional neighbours to its growing role as a key security actor in an increasingly interdependent world. Both Australia and ASEAN now view India as a major player in the formulation and application of their own broad security agendas. This emerging trilateral compendium is particularly evident in such policy areas as maritime security, climate change, energy security, law enforcement, 'good governance' and the politics of security institutions or 'architectures'. This book represents one of the first systematic efforts to consolidate these diverse but important concerns into an overarching framework for ascertaining and cross-comparing how these three entities are approaching these policy challenges, individually and collectively. It argues that the dynamics underlying their intensifying security relations are sufficiently important to conceptualize them as a distinct analytical framework that needs to be understood in the larger context of Asia-Pacific security politics.