Written by a team of IISS experts, Missile-Defence Cooperation in the Gulf contributes to the ongoing policy debate on Middle Eastern collective security. The report examines the development of Iran¿s missile capabilities over several decades, parallel efforts to counter the threat they pose by Gulf Arab states and the broader evolution of security structures in the region. It is a valuable resource for policymakers, scholars and government officials seeking to understand the `security complex¿ that encompasses all states in the Gulf, and that shapes their decisions on politically sensitive issues of missile defence.