A Syllogism

1) The Iranian government is publicly committed to aggressive use of nuclear weapons;

2) The United States is the only power capable or willing to actively prevent this.


Or another:

1) Nation-building is long, costly, and a painful drain on American civilian morale;

2) Decapitation strikes, while not cheap, are quick and have a clear distinction between success and failure.


Or another:

1) Russia is a major obstacle to action against Iran, due to the profits it realizes from Iranian dealings;

2) By taking a hand in Iranian rebuilding, Russia could create a more-friendly and more profitable Iranian client.


Or another:

1) Iran has shown the futility of negotiation and the desirability of negotiating (especially with the EU) in bad faith;

2) The destruction of Iran's government is the only meaningful deterrent to other, similarly inclined governments.


All of these lead to the same conclusion:

3) We should decimate the government of Iran, now, and let the chips fall where they may.

[Hat tip: Mark Steyn, via Tim Blair.]