This paper argues that the current and future security environment challenges require current and future leaders possess a new set of skills to prepare them for adapting to and addressing them. For the Armed Forces of nations, the most appropriate place to develop such skills is in their Defense Education institutions. Horizontal, network-centric approaches like the North Atlantic Treaty Organization's Defence Education Enhancement Programme (NATO DEEP) provide a platform for NATO Allies and Partners to cooperate in order to help defence education institutions reform and adapt. It provides a flexible and efficient way to build capacity, teach cooperation, and develop common understanding of current and future challenges.