This week, Mike and Jude are joined by Professor Peter Dean, Director of Foreign Policy and Defense at the United States Studies Centre at the University of Sydney, and the principal drafter of the Australian government’s recent Defence Strategic Review, to discuss developments in Australia’s defense planning.   The conversation begins with a discussion of the Defence Strategic Review and the significant shift in Australia's strategic outlook that it represents. Next, Mike, Jude and Peter discuss how the perceived sustainability of U.S. engagement in the region factors into Australian defense planning. They examine developments in Chinese military capabilities that Canberra is watching closely, and what responses might be demanded. They then consider the complications of executing a cultural transformation in Australia’s defense forces and building national resilience. After turning briefly to Australia’s relationship with Taiwan and potential reactions to a contingency in and around the Taiwan Strait, they conclude with a discussion of the evolving U.S.-Australia alliance and how its further development can underpin stability in the Indo-Pacific region.