Steve, Well said:
I think it comes down to misunderstanding the stakes for one side or another (or as Clausewitz said "the object in view"), and the lengths that a side is willing to go to secure those ends. It would be a mistake for anyone to assume that because the bulk of our land power (meaning that which we use to compel others through through displacement and occupation of the same space) is involved in Iraq and Afghanistan that we are unable to employ the military element of national power toward a political end.Since the situation hasn't escalated yet (at least in "world war" terms), both sides have to consider the possibility that it could jump into areas neither want to go to.
Its worth considering that any state that has an economy such as Iran has plenty of fixed site assets, and plenty that must be mobile to exert influence or fulfill their function, and as such they are at risk. Having said that, the damage done in terms of disrupting energy resources to other states who import from Iran; the risk that the military action will not wholly succeed; that it might engender other military reactions (both by Iran and others); that the action might risk other objectives; or the risk of creating conditions within Iran where instability is likely because we destroy its security and C2 assets are examples of possibilities that must all be weighed as risks against the use of military force to achieve a political objective. Its an environment where chance and the unknown are competitive.
Keeping that in mind, the value and attraction of the object in view - be it success in Iraq and the risk to U.S. military members, the risk of a nuclear armed Iran, or the possibility of a military empowered Iran that unduly influences the flow of world energy resources from the Persian Gulf - or any combination thereof - creates the opportunity for misjudgment and misinterpretation that leads to a new set of interactions.
A Iranian strategy that seeks to prolong the U.S. involvment in Iraq by supporting insurgency must be weighed against the possibilities that it by itself, or in combination with some other act (such as going nuclear, or some other action) may then require a reaction on the part of the U.S. that the other elements of policy (DIE) can no longer achieve.
In this context, I think there is a great deal of risk for Iran in adopting such a strategy. It doesn't mean that Iran has not done so - their actions would seem to suggest either they have adopted some policy aimed at supporting Shiite insurgents/groups, or it could be that the central authority does not have complete control, or that they have not considered alternatives for whatever reason -e.g. they may believe its a question of regime survival, or it may be that they believe they are somehow immune. If its the former, then diplomacy may work over time. If its the latter, sooner or later diplomacy will be ineffective. At that point its a question of how long before the two sets of political ends must be reconciled in some other fashion. Either side could come to that conclusion erroneously or at a different time then the other - but once they do, and once they act, it changes the nature of the interaction and stakes again. It stays this way until one side abandons, or modifies its end to a point that is acceptable by the other.
Best, Rob
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