Since 2006, concern about dangerous anthropogenic climate change as a national and international security threat has been growing in prominence. It has been debated in the UN Security Council, been the subject of numerous think tank studies, and is shaping defence strategy and preparedness in many states. In particular, interest has focused on concerns that global warming beyond 1.5C will cause major direct threats from more intense drought, disease, fire and storms, and also be a ‘threat multiplier’ for conflict, disease and food insecurity. HASS Researchers working on climate change and security include Anthony Burke, John Connor, Shirley Scott, and a number of graduate students. HASS research includes the role of the Security Council, theory and ethics in climate security, historical climate-related conflicts, and global security governance and climate.