Whilst classical approaches linked development with peace, security has become central to understandings of both war and peacetime. This book uniquely reflects on how to deal with the convergence of war and peace in the context of global economic and geo-political development. It addresses methodological challenges in contemporary approaches to conflict, violence, security peace and development. Two dominant contemporary approaches are selected for debate on methodologies and ethical choices: rational choice and identity-based theorizing. The chapters are arranged as dialogues around contending approaches, to better understand how the inter-locking fields of violent conflict, peace, development and security can be researched and understood. The book considers how theoretical and methodological approaches relate to different ethical and political choices, including around engagement and intervention in the four interwoven fields. Theoretical, methodological and ethical issues emerge from the critical reviews of academic discourses and case-study based chapters from across the world, including Sri Lanka, Ghana, Colombia and Rwanda.This book is an invaluable resource for postgraduate students and researchers in Development Studies, Conflict Studies, Peace Studies and Security Studies.