Ticomaya wrote: seems to be to surrender to the prospect that if Iran wants nuclear weapons, they are entitled to nuclear weapons -- after all, the US has them, and we can't stop them if they are determined to get them.
It's a combination of the two.
First, we are not the arbitrater nor watchdog of what other countries can or cannot do. It isn't our place to do so. We have no special moral authority that other countries lack when it comes to the right to own dangerous weapons. We are not immune from using them in an illegal and immoral fashion. Why, not even 20 years ago, we were supplying Iraq with WMD to use against the Iranians - the same behavior that we currently say warrants invasion of other countries. We are somewhat hollow in that respect.
Second, I truly don't believe that we will be able to stop those who are determined from excersizing what is basically a physics experiment. HOw much effort, and how many lives will have to be lost to do so? The technology to build a small nuke isn't exactly anything new. They plans on how to do it are available; hell, we learned the basic theories and construction techniques in undergraduate Physics classes I took.
You cannot stop the spread of techonology or information! You can only work to see that those who acquire it use it wisely.
We could probably go to war with Iran and win, to stop them from getting nukes; but what then? What if Pakistan turns against us, something that could easily happen - they've got nukes and they hate Israel just as much as Iran does. What happens when smaller african countries start getting nukes? Are we going to invade and kill them as well, to stop that from happening?
Better to attempt to develop a policy for dealing with the problem, before it is too late.
Cycloptichorn