Guaranteeing America’s Security in the Twenty-First Century is a practitioner’s guide to how America’s national security apparatus must prepare to deter, and if necessary fight and win, tomorrow’s wars. Written by senior military and interagency leaders who have served on every service headquarters staff, as well as the staffs of the Department of State, Director of National Intelligence, Department of Homeland Security, Department of Defense, and the Vice President of the United States, the authors bring to the table over 150 years of operational experience, more than 50 worldwide deployments, 7 Bronze Stars, 4 doctorates, and over 50 published articles and books. This book is not meant to be read cover-to-cover. Instead it is organized into bite-sized portions so the reader can consume a set of area-specific concepts in one sitting. Guaranteeing America’s Security in the Twenty-First Century aims to provide practical advice on organizing, equipping, and preparing our disparate security institutions for the future. It is direct, non-partisan, and focused on what is best for America’s national security.