USA loosers in future war against Iran. So in Iran side would whole world. Certain Persian Gulf: gulf have not deepth waters. And large NATO subamrines can not war easy in this waters. US missiles can not hit targets in coutryes what have normal AA forces.
And more: for war against Iran US navy need insert into range landbase missiles. USA can not attack Iran targets from safety range.
And more: modern supertankers have beam 60 meters and hull height near 30 meters (near 50 meters maximal vertical size). For block farwaters need sunk 3-4 supertankers and all shipping into and from Persian Gulf ended. Modern supertanker have 160000 grt, so not dream rise this ships during war.