Why opening the strait Hormuz is not easy?

https://www.nbcnews.com/world/iran/trump-wants-countries-help-reopen-strait-hormuz-rcna263537

“The countries Trump named have all gone quiet, which is quite telling,” H.A. Hellyer, a senior associate fellow at the Royal United Services Institute in London, told NBC News. France is “the closest thing to a yes,” he said, though even Macron is talking about something “purely defensive.”

 

“Protecting ships is a very big gamble,” he said. “On the operational side, you’re putting military assets inside a very narrow corridor, giving Iran multiple opportunities to hit at short distance.”

To suppress these threats, Horowitz told NBC News, “you need more than aerial and naval power: You’d need boots on the ground, along key areas of the coast.”

In any case, Horowitz said he was skeptical that such a force could stabilize markets. “Just one attack is enough to suspend traffic,” he said. “The bar is really high to create enough confidence to lift the de facto closure.”