Cobblestones said:
			
		
	
	
		
		
			What do you mean by targeted? The US sanctions are already in place.
		
		
	 
i meant the set of the new unilateral economic sanctions announced by obama days ago. these were passed as a part of the just passed defence bill. they are specifically designed (for the first time) to go after buyers and exporters of  iran's oil (denying them us markets, asset freeze etc) 
	
	
		
		
			Do you mean militarily? I don't think the US will do that. What would make you think so?...What is much more likely is that the US (and/or Israel) will engage in very focused strikes against Iranian nuclear facilities
		
		
	 
i generally agree but i dont think even the air strikes are now likely.  below is a detailed personal analysis why i think so...
in order to rationally entertain the question  if  the us or israel are going to attack Iranian nuclear installations several sub questions need to be entertained.  
(i) is iran working on the nuclear weapon ?
(ii) how close is it to fruition ?
(iii) have sanctions or negotiations exhausted themselves ?
(iv) can the strike be effective and the subsequent mess be controlled/cleaned ?
as I said earlier, i believe around the 2008-2009 time frame due to american policy blunders iran decided to nuclear weaponise. so the (i) is an affirmative imo. 
how close ? no one really knows. but if the usual israeli histrionics (9 months now) are extrapolated to a more reasonable timescale, perhaps 2-3 years for a delivery platform and a nuclear  warhead both successfully paired and tested. after all, this decades-old nuclear technology simply can not be denied to a determined, oil-rich and enlightened player like iran.  
the sanctions road is also a dead end imo. One only needs to look at the un security council circus…there were 4 sets of sanctioning resolutions. all were substantially watered down due to russian and chineses  objections. of course they failed. as expected, obama just announced a set of unilateral ‘yet toughest’ sanctions (outside the un framework) that supposedly went for iran’s  jugular - cutting off their oil exports. it’s a no brainer that these are also bound to fail - and the us knows this too well as the toothless bill submitted to the congress proves . the bill is full of all sorts of ifs , buts and backpedaling provisions designed  to control economic mess through oil price caps. sure it will fail too- mainly because the chinese are too deeply involved with iran economically and the Russians politically and militarily. all this talk about the west choking iranian economy and the ayatollahs blocking the strait in response is little more than a game of brinksmanship designed for domestic grandstanding. 
so, what’s left is a military air strike. but that is likely too late now. 
firstly, many experts believe that iran already has moved it’s most sensitive parts deep underground. secondly, i don’t believe the us (on balance in the wake of already expanded political capital in iraq and afghanistan) will have the will to risk again. of course, i can be wrong as one can never predict the american right wing arrogance. 
this leaves as ever adventurous israel to strike alone. will they ?
firstly, the more they talk about it - and there was a flood of verbosity lately - the less likely it is.
secondly, i believe if the us decided against the strike themselves (and if they can not restrain israel  politically) they, the us, have the technical means to deny israelis the execution (withholding satellite intelligence, iraqi airspace control, deliberate sensitive leaks etc).
in summary, unfortunately, i believe iran is going nuclear  and we’re not far removed from that  fact of the new world order…