Not enough options. A large scale invasion, without planning for occupation, would need 800,000 men. If occupation is required, add another half million on top of that, so 1.3 million men needed. The US has 1.3 million contractors and 700,000 National Guard/former contractors to call upon. The US government says it does not personally need the Straits of Hormuz to be reopened. I cannot fathom a scenario where the US homeland is entirely denuded of defence to effect regime change in Iran. The contribution from Gulf States will be negligable. While there are at least 150,000 Iranians living in Israel of fighting age, I doubt any of them will show up. To date, the IDF have not provided a single foot soldier to support the US, instead preferring to use the cover of US air cover to expend the munitions that the US taxpayer pays for, at minimal risk to itself. Europe is pre-occupied with Russia, plus America warns us that China wants to invade Greenland any day now. A build up of forces will take at least 6 months, and will likely need to be based in Saudi Arabia. Option 1 is entirely unrealistic because there are no stated aims. And so I cannot vote for that. Option 2 is dishonest; it creates an artificial schism in the readership. Perhaps that is the intent; to create argument and discord. There could be lots of diametrically opposite reasons not to support a full scale invasion. Cannot vote for that. Option 3 is laughable. The USMC are not "special forces". The other mythical special forces; how can anyone vote on that without knowing the objective. Again, cannot vote for that.