This chapter concludes the book by summarising and answering its central research question. In addition to synthesising the main findings, it advances three further arguments. First, it examines the evolving debates following Russia’s invasion of Ukraine and in the early weeks of Trump’s second administration, including proposals to expand nuclear sharing or complement it with additional nuclear capabilities in Europe, and considers how such proposals are likely to be received in the host nations. Second, it analyses the intensifying international backlash against nuclear sharing and explores how this opposition may continue to evolve. Finally, the chapter offers recommendations for how technocrats can enhance their responsiveness and how the public legitimacy of nuclear sharing might be strengthened moving forward.