Got your attention? Why Iranian oil? Maybe because no security on Tanker, like UK flagged Tanker. So when captured no risk of loss of life. Since SAS, 42 squadron are stupid, and may die for Queen and Country! And start war in process. Still, this is not English flag Tanker, not carrying oil to UK. So UK, may not be forced to release Iranian Tanker. It brings pressure. But is it enough? To lift blockade? I doubt it. The English may release Iranian Tanker to go back to Iran. But blockade will remain. In all this incidents of Tankers being hit or taken, the price of crude has changed little, from 63 to 67 Dollars. Hardly a crisis , because of a surplus of oil in market, more severe disruptions are needed to have a political effect. Like total shutdown of oil from Saudi / UAE to England and USA or even other European country. This should ideally be done when Iran has a nuke detterent. Acting in a step by step manner, giving ultimatums has disadvantage of allowing the enemy to start a conventional war. But events have a momentum of their own.
I have always maintained an immediate and proportional response. This idea exists in law. I understand a gradual step by step escalation. Leaving the other side a way out. But all this depends on some assumptions. The main one is that we assume the two sides are equally matched. And perceive each other so. That they equally share risks and benefits. Like two individuals in face to face fight. But in this case we are not dealing with equals. Risks and benefits are not shared equally. Under this conditions, the weaker side, should if cornered, act with full force to release itself. Since a stand off and more limited application of force, will not compel the other side to retreat.
What you need is nuke test. Near enough to singe Bolton's moustache. And give Pompeo a sun burn, so he looks orange like Trump . Then total shut down to England first then Europe if needed. Then orange Trump turns into red Trump.
This claim by Trump is either true or false. In both cases, a denial by Iran indicates that they prefer NOT to go to war NOW. And it also indicates that the yanks prefer to go to war NOW. This adds to my argument that a gradual escalation by Iran, and giving time and ultimatums, will not give positive results for Iran, regarding the lifting of blockade. All to do with perceived strength of one side, and potential benefits to go to a conventional war.
Here, the claim by Trump, even if false, is far more important than claim by Iran, even if true.