This book surveys how Saudi-Iranian relations have unfolded in the Persian Gulf, Iraq, Lebanon, and Palestine since 2003, identifying the sources of rivalry and cooperation between the two powers. Understanding and leveraging this relationship will be a critical part of U.S. efforts to promote stability after the drawdown of U.S. forces in Iraq and to manage the regional impact of Iran's nuclear ambitions.

"Sponsored by the Smith Richardson Foundation." "MG-840-SRF"--P. [4] of cover. "Rand National Security Research Division."

Introduction: Saudi Arabia and Iran: between confrontation and cooperation -- Sectarianism and ideology in the Saudi-Iranian relationship -- Relations in the "Core": conflict regulation in the Gulf and Iraq -- Contention on the periphery: Saudi-Iranian relations and the conflicts in Lebanon and Palestine -- Conclusion: key findings and implications for U.S. policy.