Climate change is increasingly recognised as a security issue. Yet this recognition belies contestation over what security means and whose security is viewed as threatened. Different accounts – here defined as discourses – of security range from those focused on national sovereignty to those emphasising the vulnerability of human populations. This book examines the ethical assumptions and implications of these 'climate security' discourses, ultimately making a case for moving beyond the protection of human institutions and collectives. Drawing on insights from political ecology, feminism and critical theory, Matt McDonald suggests the need to focus on the resilience of ecosystems themselves when approaching the climate-security relationship, orienting towards the most vulnerable across time, space and species. The book outlines the ethical assumptions and contours of ecological security before exploring how it might find purchase in contemporary political contexts. A shift in this direction could not be more urgent, given the current climate crisis.

Jon Barnett takes on the military-industrial interests of those in the establishment to reveal how ordinary human beings must have a safe environment in which security is subordinate to care of the planet and its delicate ecosystems.

Since the end of the Cold War, environmental matters -- especially the international implications of environmental degradation -- have figured prominently in debates about rethinking security. But do the assumptions underlying such discussions hold up under close scrutiny? In this first treatment of environmental security from a truly critical perspective, Simon Dalby shows how attempts to explain contemporary insecurity falter over unexamined notions of both environment and security. Adding environmental history, aboriginal perspectives, and geopolitics to the analysis explicitly suggests that the growing disruptions caused by a carbon-fueled and expanding modernity are at the root of contemporary difficulties. Environmental Security argues that rethinking security means revisiting the question of how we conceive identities as endangered and how we perceive threats to these identities. The book clearly demonstrates that the conceptual basis for critical security studies requires an extended engagement with political theory and with the assumptions of the modern subject as progressive political agent. Viewed thus on a global scale, the environmental security discourse raises profoundly troubling political questions as to who we are and what kind of world we are collectively making in our efforts to be secure.

Economic development, population growth and poor resource management have combined to alter the planet’s natural environment in dramatic and alarming ways. For over twenty years, considerable research and debate have focused on clarifying or disputing linkages between various forms of environmental change and various understandings of security. At one extreme lie sceptics who contend that the linkages are weak or even non-existent; they are simply attempts to harness the resources of the security arena to an environmental agenda. At the other extreme lie those who believe that these linkages may be the most important drivers of security in the 21st century; indeed, the very future of humankind may be at stake. This book brings together contributions from a range of disciplines to present a critical and comprehensive overview of the research and debate linking environmental factors to security. It provides a framework for representing and understanding key areas of intellectual convergence and disagreement, clarifying achievements of the research as well as identifying its weaknesses and gaps. Part I explores the various ways environmental change and security have been linked, and provides principal critiques of this linkage. Part II explores the linkage through analysis of key issue areas such as climate change, energy, water, food, population, and development. Finally, the book concludes with a discussion of the value of this subfield of security studies, and with some ideas about the questions it might profitably address in the future. This volume is the first to provide a comprehensive overview of the field. With contributions from around the world, it combines established and emerging scholars to offer a platform for the next wave of research and policy activity. It is invaluable for both students and practitioners interested in international relations, environment studies and human geography.

Since the middle of the last century, rapid population growth and urbanization have led to the encroachment of a large number of natural spaces, resulting in a series of ecological security issues such as environmental pollution, resource depletion and habitat destruction, which have severely challenged global sustainable development. Urban ecological security is an important barrier to urban residents' production and life, the foundation and core of national or regional ecological security, and it is of great significance to promote green development and harmonious coexistence between humans and nature. With global warming, frequent natural disasters and other multifactorial threats, the issue of ecological security in cities as centers of the settlement have become a focus of international attention. However, cities are complex systems with social, economic and natural conditions coupled with each other. Under the overlapping of many factors, the basic problems such as the mechanism of urban development on ecological security have not been fully explained, and there is also a lack of quantitative assessment methods corresponding to urban ecological conditions, let alone simulation and prediction.

This phrase can mean a variety of things.