They did, they even published publicly. Analysis have been consistent for years: Iran can close the strait of Hormuz indefinitely with minimal effort. Shipper

They did, they even published publicly. Analysis have been consistent for years: Iran can close the strait of Hormuz indefinitely with minimal effort. Shippers and their insurers are extremely risk averse. A single dude with a shoulder mounted rocket anywhere in on the coastline is enough to keep ships out.