>The symbolic value of Iran hitting a target in the US, even with only a small conventional warhead, would be considerable.
This would mean complete suicide for Iran. The US military basically exists to inflict unimaginable hurt on anyone who does this. Not to mention, an attack on the US is an attack on NATO.
There are loads of NATO countries that will not assist the US in this case because NATO is a defensive alliance not a "this country responded my armed aggression, let's strike them" alliance.
There were no people in Greenland when it was settled by the Norse in the 10th century. The current Inuit population arrived after the Europeans in the 14th century.
This would mean complete suicide for Iran. The US military basically exists to inflict unimaginable hurt on anyone who does this. Not to mention, an attack on the US is an attack on NATO.