Collectively, the essays within this text reveal the innovative thinking, diversity, and depth of thought that is characteristic of the U.S. and foreign military and civilian agency personnel that comprise each class of the U.S. Army War College as they prepare themselves to become senior leaders of their militaries or agencies. The essays also offer key insights at the policy, strategy, planning, and doctrinal levels that can be applied in the current and future strategic environments confronting the United States and its security partners.