"we're four years closer to a nuclear Iran"
No shit sherlock. We're four years closer to a nuclear Haiti, too, because it was four years ago. It's meaningless. It's virtually a tautology - "Iran is four years in the future from four years ago". Furthermore, we've been complaining about Iran's imminent nuclear threat for over 30 years.
Sabre rattling at its finest. This is really about making sure America's projecting gratuitous military force in the region that's sitting on most of the oil that's left.
That IS the key resource, and we're going to park every tank we own over there to make sure the last drops of oil go to fueling said tanks.
So we need plenty of excuses to be there. Even better if the excuses involve paving large parts of it, right Reagan fans?