This book explores the varied ways in which Nigeria needs to undergird her national security and sustainable strategies with critical thinking perspectives and principles. With insecurity in one way or another present in most, if not all, of Nigeria, this volume brings together military professionals and civilian scholars to present their shared understanding in order to answer an age-old question: Whither Nigeria's national security and strategy?The book is relevant to political leaders, policy makers and scholars with diverse interests around sustainable strategies within security services. Ultimately, it will foster debate and constructively addresses various issues ranging from social, political, cultural, historical, economic, military and intellectual strategies.