This chapter discusses human security and climate change, scarcity of resources and conflict, climate migration and conflict, and climate change as a security issue in relation to both internal stability, international peace and security. Environmentally induced migration has the potential to become a phenomenon of unprecedented scale and scope. Its effects on the global economy, international development, and national budgets could be profound, with significant implications for almost all dimensions of human security. A human security agenda interfaces with poverty eradication which, in turn, is linked to sustainable development. It has been articulated that human security is tied to people's access to resources and vulnerabilities to environmental change, while environmental change is affected by human activities and conflicts. Finally, chapter discuss extreme weather events and disaster reduction including the Hyogo Framework for Action.