Aiden Warren is Professor at the School of Global, Urban and Social Studies at RMIT University in Melbourne, and Theme Leader (National Security) at the Centre for Cyber Security Research and Innovation (CCSRI). He is a Fulbright Scholar and has spent extensive time in Washington DC completing fellowships at the James Martin Center of Non-proliferation, the Arms Control Association (ACA), and Institute for International Science and Technology Policy (IISTP) at George Washington University. Professor Warren is the author of US Foreign Policy and China: Security Challenges Across the Bush, Obama and Trump Administrations (2021), Understanding Presidential Doctrines (2022), and Global Security Crisis in an Age of Crisis (2024). Joseph M. Siracusa is Professor and Inaugural Dean of Global Futures, Faculty of Humanities, Curtin University, Australia, and President Emeritus of Australia's Council for the Humanities, Arts and Social Sciences. A veteran historian, he is known internationally for his writings on the history of nuclear weapons, diplomacy, and global security. He is the author of numerous books, including, Nuclear Weapons: A Very Short Introduction (3rd edn, 2020), and Presidential Doctrines: U. S. National Security from George Washington to Joe Biden (2022).