I think that wars are usually fought over land and resorces, and as you say are about
the elimination of the enemies ability to resist (wich is different than their destruction.
I think that no-one really wanted to invade japan at that point. As you say it would have been far too costly for all involved. But, to use the nuclear option so enthusiasticaly, when a less destructive method ie. a negotiated surrender wich was what the Japanese were activly seeking, shows that there was more to the bombings of hiroshima and nagasaki than intent to
win the war in the Pacific. It was already won. The bombings were for effect, a great big demonstration to the russians that the Allies already had this capability and more importantly
were not afraid to use it.
The point is tho, that to try and justify the use of nuclear weapons, wether they are bombs as in Japan or whatever the Pentagon has planned for Iran, is less about 'winning', and more about waving a giant ***** in your enemies face.
To be threatening Iran with a pre-emptive attack using conventional weapons as well as the new generation of nuclear munitions, because the Iranians
might one day acquire nukes themselves is utterly crass.
The Russians have nukes, so do the chinese and many others, including pakistan. The excuse to single out Iran (because they might let AQ have some bits and pieces to make a dirty bomb), when the situation in Pakistan is as it is, is daft.
Its as daft as the plan to go into Iraq on the pretense of chasing down WMD's that anyone with half a brain knew wer'n't there, thus allowing the whole debacle in Afghanistan to develop.
Why isn't OBL in US hands? 'Cos he wasn't important. Thats
not what it was all about.
Why is Iran being threatened with military action? Its nothing to do with a 'potential for acquiring the knowledge and capabilities to build a nuclear bomb', thats for sure. As Red said, the true threat these days comes from small un-affiliated groups, not nation states. To stop these people requires 'police' type action, not full scale military ops.
So why Iran?
Thats maybe a question that the supporters of military action against the Iranians should be asking themselves. but i dont suppose they will. Why should they.
Most of them couldn't find Iran on a map. Why would they give a toss about the people who live there? If Bush and Fox say their bad people it must be true! After all they've never been wrong before......