QUOTE (Warlordtheft @ Dec 2 2009, 01:01 PM)

Not quite true....first strike was one of the goals of the nuclear deterrent during the cold war (problem was achieving it). Hence the use of SSBN's, stealth bombers and suitcase nukes (thankfully rare from what I understand).
The real reason nukes exist is to keep minor wars from becoming major ones. It will not stop a nuke from being used (my guess is the nuke used will belong to the Isrealis, and a 25% that iran at some point will be the target).
First strike was a pipe dream of crazy brinkmanship - First strike is impossible to achieve against any modern nuclear threat.*
particularly in the cold war. (notably because of SSBNs)
Nuclear deterrence is predicated on the assumption your opposition is sane.** if your opposition is insane, then deterrence doesn't work and there is no solution.
this is why 'rogue' states pursuing nuclear capability are so scary on the world stage. (ignore that the biggest rogue state of them all has the second largest numerical and largest by tonnage arsenal in the world already.)
*assuming you intend to defeat your opponents ability to respond with nuclear capacity at all.
**not wanting to get into the game theory involved in this thought experiment, sane actors never fire nukes - the upside/downside arguments never justify it.