This volume critiques contemporary power trends by examining key bilateral dynamics between five putative ‘poles’ of the multipolar order in the twenty-first century. Written by emerging scholars and established academics, this work provides a timely and authoritative analysis of one of the most controversial and compelling security debates of the twenty-first century. Adopting a detailed case study approach, the volume examines contemporary great power relations between the US, China, Russia, India and the EU. Each chapter explores the essential nature and characteristics of individual inter-state relationships in order to explicate and appraise the empirical evidence for a putative multipolar order. The volume aims to deepen understanding of power trends and critically assess the individual inter-dynamics at play. In doing so, it critiques the various models offered, such as the hub and spoke model (with the US remaining as the primary actor) and Zakaria’s ‘networked’ model, as part of a purported ‘post-American world’. The work places each of the individual relationships into a wider strategic and political context, in relation to the continued international turbulence and change that has seemed even more prominent in recent times, taking into account the twin challenges of Brexit and the presidency of Donald Trump. It concludes by returning the focus to the central questions of if, how and when a post-American, multipolar world could develop. This volume will be of much interest to students of global security, foreign policy, and IR in general.