Special Report: ‘Time to take out our swords': Inside Iran’s plot to attack Saudi Arabia

(Reuters) - Four months before a swarm of drones and missiles crippled the world’s biggest oil processing facility in Saudi Arabia, Iranian security officials gathered at a heavily fortified compound in Tehran.

The group included the top echelons of the Islamic Revolutionary Guard Corps, an elite branch of the Iranian military whose portfolio includes missile development and covert operations.

The main topic that day in May: How to punish the United States for pulling out of a landmark nuclear treaty and re-imposing economic sanctions on Iran, moves that have hit...