In recent years, the rivalry between Saudi Arabia and Iran has become increasingly influential in shaping the nature of Middle Eastern politics, with the two exerting influence across the region in an attempt to increase their own power and to reduce that of the other. Amidst an increasingly fractious region, this article explores Saudi Arabia’s attempts to securitize Iran to actors in the US. The signing of the nuclear agreement and the failure of the US to move beyond normal politics signal the failure of Riyadh’s efforts to securitize Iran. Understanding the nature of relationships in the region, particularly between Riyadh and Tehran and between Riyadh and Washington, helps to understand the changing nature of regional politics and ultimately, the emergence of a more pro-active Saudi foreign policy.