Let's chew on this for a while.
All these politicians on the campaign trail are talking tough talk about attacking Iran, with the exception of Ron Paul.
Let's frame this against the Cuban Missile Crisis. Back then the republicans had different views of how to handle this too, and this went down in history as an act of real deplomicy that did not cost American lives or huge sums of taxpayer dollars.
Now lets consider the negative consequences of going to war in Iran:
Stockmarket tumbles, as it adjust for the disruption in the middle east
American give their lives
Huge financial burden on American
Now lets consider the positive consequences of going to war in Iran:
Defense stocks rally as defense contractors profit from it
Jobs are created by these contractors
Oil companies make huge profits off the skyrocketing oil prices
Fewer unemployed because they are at war
Now think about the interest groups that want this war and think about the cost of American lives and something closer to your heart, the massive debt to finance it and the tax burden it will create