A joint analysis of Brookings Institute and the Saban Center for Middle East Policy entitled “Which Path to Persia” selects the military option as the only viable course of action against Iran. The Trump-administration obviously follows this advice.
A joint analysis of Brookings Institute and the Saban Center for Middle East Policy entitled “Which Path to Persia” gives us a strong sense of what is driving Washington and the Deep State’s agenda in the former Persian Empire. It suggests that the only way to eliminate all of the problems that Washington has with the current Iranian regime is to use the military invasion option.
Conspiracy theory. The analysis in question - which is available online and dates back to year 2009 - in fact says: "if one of the diplomatic or regime change options cannot be made to work soon, then Washington will have no choice but to adopt either Containment or one of the military options." It does not state that military intervention is the only feasible option. In fact, it lists pros and cons to all the possible approaches to Washington's Iran policy.