This volume is a collection of contributions by world-leading experts in the nuclear field who participated in the educational activities of the International School on Disarmament and Research on Conflicts (ISODARCO). It features some of most prominent scholars and practitioners who contributed in fundamental ways to shaping policies, strategies, theories, scholarly studies, and debates in the field of non-proliferation and disarmament. On the occasion of ISODARCO's 50th anniversary this book revisits a selection of contributions that capture the pressing issues during the five decades of continuous engagement in disarmament and non-proliferation education.