What North Korea needs is uncertainty about whether they have weapons, they don't need to prove they have them, if they were known to have a couple weapons, China and Russia would definitely want the threat eliminated, and China could easily unilaterally destroy NK in a war. If they were known to have Nuclear Weapons, Japan would probably go nuclear, something Japan could probably do in a matter of a couple months if they wanted to, they have both the scientific know-how and nuclear material to do it easily. With international support behind a US or China led coaltion, NK doesn't stand a prayer, and would be unable to use any of their WMD in the war, because that would only lead to the further destruction of their country and the death sentence of anybody remotely connected to the regime when humanitarian trials went on after the war.
Smurf said:
I think that's just blind faith ther bystander, NK has a much more formidable force than SK and the USA will be hard pressed to send a decent number of troops unless there is a long build up to hostilities that the white house is just waiting for.
The thing is, NK will inevitably lose in the long run, especially if they took the method you seem to suggest and attacked SK first, you can bet that even if the US was still tied up in Iraq, most of the EU, Austrailia, possibly India, possibly Taiwan would be sending troops over in days. Like I said, because of available local ground forces, NK would easily be able to push back SK and the existing US troops in SK which are at very low levels because of Iraq. However, the combined militaries of all those countries I mentioned, and even the US which still has a lot of available air power, would easily be able to establish air superiority in NK within a week or two, and should then be able to bomb NK into submission within a month or two, while simultaneously making a stand 100 miles south of the border or so wherever the troops could hold off the NK advance, and just waiting to let bombing take its effect and then push back the North Koreans.
I think if North Korea attacks first, and several countries, let's say England, france, spain, Germany and austrailia, all get heavily involved, along with the US, you could expect the NK advance to last 2 weeks and possibly move through half of SK, and then the push back would start after about 2 months, and NK would surrender after 4-5 months.
~Lyuokdea