The exercise follows a recent IRGC drill in the Strait of Hormuz earlier this week, during which Tehran temporarily closed the strategic waterway, a move analysts say was intended to demonstrate its ability to disrupt global energy flows should conflict erupt. The exercise follows a recent IRGC drill in the Strait of Hormuz earlier this week, during which Tehran temporarily closed the strategic waterway, a move analysts say was intended to demonstrate its ability to disrupt global energy flows should conflict erupt.