Not necessarily. It's a matter of risk. How many resources do we want to commit? Are we comfortable putting a large number of troops in Iran? Are we comfortable with major losses as we try to enforce against drones and mines?

It's not that I think any of these things are wise, but this is part of the risk calculus you make when you decide to wage war. It's more like a debate: if you don't have a plan for uncomfortable questions you're a poor debater. The US has the physical means to prevent the closure, but I think it's quite clear that this administration ignored known risks and acted recklessly. And more importantly, apparently had very little contingency planning if things didn't go their way.