For decades, the Greater Middle East has been a leading challenge to American foreign policy. This vast region - ranging from North Africa in the west to Afghanistan in the east, and from the borders of Central Asia down to the Horn of Africa in the south - has been a cauldron of turmoil that has affected not just American interests, but generated threats to the American homeland. The multitude of challenges in this region has led to some confusion. What should be the focus of U.S. policy in the Greater Middle East? This book explores this state of affairs and its implications by delving deeper into how the current geopolitics of the Greater Middle East came to be. A first few chapters look back to the history of the region and the historic rivalries among Turks, Arabs and Persians up to the end of the Cold War. The book then examines the main current power centers of the region - Iran, Saudi Arabia and Turkey. It then turns to the geopolitical competition among them in recent years,