I agree that there will be a blockade. Do you think we'll preemptively bomb Iranian nuclear facilities and military assets, too? Or, will we simply blockade (unless the Iranians start shooting, in which case we obviously shoot back)?
I don't *think* that we'll strike inside Iran (first).
The complete encirclement of Iran points to an obvious blockade. Political dynamics would tend to make one think that we'd go: diplomacy (e.g. the EU-Iran talks), sanctions, blockade...with more severe options being held in reserve for later (if at all).
How long can Iran go without cash?
We may find out.