One of the most controversial aspects of United States foreign policy centers about its response to unconventional conflict--that is, revolutions, counterrevolutions, and terrorism--in and from a number of Third World countries. Examining the current U.S. political-military posture, this critical study assesses the challenges posed to open systems by these conflicts and proposes guidelines for creating a more effective U.S. response. The author first explores the nature of unconventional conflicts, then turns to the U.S. response to the challenges unconditional conflicts present. Urging the need for a new realism based on a more accurate picture of present political conditions and U.S. interests, he concludes with a series of suggested guidelines for designing U.S. policy, strategy, doctrine and organizational strategies as a means of developing a more viable approach to the challenges of contemporary military and political conflict.