those russian silkworm missiles are going to really help the iranians when we fire salvo's of anti-ship harpoon missiles from submarines and F-15's at whatever Hitler Jr tries to block the strait with.
http://www.fas.org/man/dod-101/sys/smart/agm-84.htm
What does that have to do with ANYTHING if the Iranians have 100s of MOBILE, HIDDEN Silkworm anti-ship cruise missiles? Do you assume we know where every single Iranian Silkworm is hidden?
Are you aware of how many much larger mobile SCUDs we successfully destroyed before launching during the Desert Storm air war? Depending on who you read, from a handful to zero. Saddam's mobile SCUDs were launched on every day of that monthlong air war.
Sure, the SCUDs ended up not stopping us, but the equation is very different when you are taling about sea-skimming silkworms targeting fat slow oil tankers.
Once the tankers are burning, the insurance companies will declare that a state of war exists in the region, and they will cancel their policies.
This is one of the many ways that Iran can bottle up the Persian Gulf oil flow.