One of NATO's objectives is a better understanding of the human and social aspects of security-related issues. This book presents the proceedings of the NATO Science for Peace and Security Advanced Research Workshop (ARW), Leadership Development Programme on Gender and Diversity, Peace, Risk and Emergency Preparedness and Collaboration, held in Tønsberg, Norway, on 11-12 December 2018, one of the aims of which was to strengthen organizational leadership. The workshop firmly established the collaboration between Japan and other NATO countries with regard to Women, Peace and Security (WPS). The workshop gave the participating leaders and researchers an opportunity to meet and debate, to learn and to build networks of leaders for change. This book consists of fourteen chapters, including a summarizing introductory chapter. It explores topics related to the way in which continued progress and change in institutional behaviors require an approach focused on altering perspectives, and enhancing the skill sets of leaders. Each chapter stands alone, but is ordered within the framework of the Societal Programme Model (SPM) described in Chapter 1. The book will be of interest to all those involved in building leadership and changing institutional behavior.