My concern is that other countries can aid Iran with weapons in a direct and indirect way. There is no guarantee to block the railroads from East and the shipments from North.
I would be more concerned if more countries did not help Iran, since in this conflict it's the victim.
Why are you concerned that the clear victim of foreign aggression get help?
They don't need it though. Our top brass knew this war is stupid twenty years ago.
Without nukes we'll lose this war and badly.
That's not a concern it's a reality. Iran is not shut-off or blockaded to any meaningful degree. It has tons of unmolested border crossings and Caspian sea access, and maintains full control within it's own borders (minus the parts that have been blown up).