Collective mobilisation is needed for an adequate response to climate change. How do we get there? How does climate change affect militaries? What role can technology play in mitigating the risks? What challenges does federalism pose in the effort to address climate change? In this episode, Tom Middendorp, Chris Barrie, Cheryl Durrant, and Sophie Lewis join Danielle Ireland-Piper to examine the critical link between climate change and national security, and what action is needed to mitigate the risks posed by it.  General (Retired) Middendorp AO is the Chair of the International Military Council on Climate and Security and the former Dutch Chief of Defence.  Admiral (Rtd) Chris Barrie AC is the former Australian Chief of the Defence Force and a founding and executive member of the Australian Security Leaders Climate Group.  Cheyrl Durrant is the Former Director of Preparedness and Mobilisation at the Australian Department of Defence and a founding and executive member of the Australian Security Leaders Climate Group.  Dr Sophie Lewis is ACT Commissioner for Sustainability and the Environment.    Dr Danielle Ireland-Piper is Academic Director at the ANU National Security College (NSC).   TRANSCRIPT    Show notes Listener survey: The Nation Security Podcast NSC academic programs – find out more  Tom Middendorp’s book – The Climate General  Chris Barrie’s report – Climate change, security and Australia’s Defence Force   We’d love to hear from you! Send in your questions, comments, and suggestions to [email protected]. You can tweet us @NSC_ANU and be sure to subscribe so you don’t miss out on future episodes. The National Security Podcast is available on Acast, Apple Podcasts, Spotify, and wherever you get your podcasts  Hosted on Acast. See acast.com/privacy for more information.