Either there is some bluffing going on or we have intelligence that is real, and we want Iran to know it.
Maybe they are trying to get the Iranians to infer that Kerry is sharing Iranian intel with us, preventing him from going over there any more for fear of his life.
Just wildly speculating.
If Iran jumps ugly with USA, President Trump will sink Kharg Island.
Maybe they need to start putting guns on the deck...like they did the Liberty ships of WW2?
Tanker war redux. If Iran starts attacking shipping, I expect open season on Iran’s nuclear program.
https://en.wikipedia.org/wiki/Operation_Praying_Mantis
If that happens the Iranian Navy and Air Force would cease to exist. We would also destroy the oil loading docks on the Persian Gulf. Iran would have no income except for the meager portions they could move via land tankers to Turkey.
Take a look on google maps at Kharg Island. It is their major export center. It is a mass of oil storage tanks and loading facilities. A few B52s would render it a raging inferno.
Our fly-boys would enjoy the hell out of this.
Well if Iran wants a war are B52s are now there to accommodate them!