Under the Shah Reza Pahlavi, Iran was the first Persian – or Arabian – Gulf nation to aspire towards nuclear weapons. Whether wanted for power or prestige, Iranian ambition launched a race which was joined by Iraq under Saddam Hussein. However, Iraq dropped out of the race 20 years ago, but the Islamic Republic has been patiently pursuing its program. And now the new kid on the block is Saudi Arabia’s Crown Prince Mohammed bin Salman. He is busy negotiating with the United States for the supply of civilian nuclear facilities, which could later enable the Saudi’s to pivot towards a military track. How far have these efforts developed, and what is the relationship between these two trajectories?