good OP as i read through all of it. I'll point out a couple of my beliefs on this issue:
1) 2012 will be the year of no bullshit politics. People in all parts of the world in all forms of government are going to be forced to act. The EU is going to have to figure out if they have balls or not to do the right thing about their currency with this issue with Iran brewing. On the flip side, our so far moronic president will actually have to own the sanctions bill due to go into effect in July.
2) We, the US should not even begin to think about military action in Iran. We do not have the money, we do not have the time and we do not have the right to attack Iran. Right now i feel like we are Rome. How many years have we know peace? It is not our responsibility to be the world police; however it is the responsibility of the world for all of us to look out for each other. In other words, the world is not ready for world war 3 over the price of oil and Iran continuing to posture.
3) Depending on if the sanctions go into effect and if gas prices go up, then Obama won't see a 2nd term which I'm sure he fears. Truth is though, its scary to think what war mongerer we'll have in office this next year. If we do this, we must start the energy race, like the space race, to find a true alternative, renewable and cheap replacement for oil.
tl;dr
No shouldn't go to war
Yes protect people
Lets find a new product to end dependence on oil.