They pushed Trump and nothing happened ... thus Iran will keep this up until some country exercises force against them. They want to drive up the price of oil.
The UK, however, will not take this lying down. One thing that will tick the British Lion off is an assault on their shipping. They can’t let it slide.
I believe the mullas’ purpose is not so much economic as it is domestic. Much of the populace is fed up with their government, so the government needs an external threat, a war if you will, to garner support from the masses.
The mullas need their country to be attacked by the Great Satan or the Lesser Satan and their minions. I don’t believe President Trump is willing to play their game.
Iran will someday, soon, become Persia and the mullas will be deposed.