Unity of effort, a concept which derives from the principle of war, unity of command, is the effective coordination of means to achieve ends. Stated in this way, unity of effort also is simply a definition of strategy. 1 In fact, the concept is really a necessary but insufficient condition for a successful strategy. In the formulation of Professor Arthur Lykke of the US Army War College, it is a "way" in his "three legged stool" of the "ends, ways, and means" which comprises strategy. 2 Nevertheless, unity of effort is an absolutely critical concept for achieving strategic success in the "brave new world" of "gray area" phenomena born in the wake of the Cold War.