I am still waiting for someone to suggest how you do that without starting WWIII. Blockade? Invasion by Sea? Air Assault?
(No Nuclear Option Considered)
I call this new war World War IV, because I also believe that what is generally known as the cold war was actually World War III, and that this one bears a closer resemblance to that great conflict than it does to World War II. Like the cold war, as the military historian Eliot Cohen was the first to recognize, the one we are now in has ideological roots, pitting us against Islamofascism, yet another mutation of the totalitarian disease we defeated first in the shape of Nazism and fascism and then in the shape of Communism; it is global in scope; it is being fought with a variety of weapons, not all of them military; and it is likely to go on for decades.
Maybe they also refer to the Truman of August 1945.
From a purely American perspective, even if we had the manpower for an invasion of Iran, it's hard for me to justify the cost in American lives, when we have the means of forcing total capitulation at hand.
But to do that, we'd have to give the Iranian armed forces the same choice we gave the Japanese-- orderly surrender or national annihilation.
Not sure anyone in DC actually has the stones for that.