John speaks with Mike Pezzullo, former Secretary of Australia’s Home Affairs Department (2017-2023), about the nation’s historical resilience and current security challenges. They explore how Australia’s early naval power deterred threats like German warships in WWI, yet today, the country faces a "real and present danger" from China’s naval deployments, such as the recent task group in the Tasman Sea. Pezzullo warns that Australia’s strategic sensibility has declined, leaving it vulnerable despite warnings from leaders like former Prime Minister Rudd in 2009.