Despite occupying a central role and frequently being used in the study of international politics, the concept of the "event" remains in many ways unchallenged and unexplored. By combining the philosophy of Gilles Deleuze and his concept of the event with the example of 9/11 as an historical event, this book problematises the role and meaning of "events" in international politics. Lundborg seeks to demonstrate how the historical event can be analysed as a practice of inscribing temporal borders and distinctions. Specifically he shows how this practice relies upon an ongoing process of capturing various movements – of thought, sense, experience and becoming. However the book also demonstrates how these same movements express a life and reality that elude complete capture, highlighting the potential for alternative encounters with the event, encounters that constantly threaten to undermine the limits and imaginary completeness of the historical event. This book offers an exciting new way of thinking about the politics of encountering events, arguing that at the heart of such encounters there are always elements of uncertainty and contingency that cannot be fully resolved or fixed. It will be of great interest to students and scholars of international relations, cultural studies and history.