I agree completely.

However, I would hope that nations like China, Japan, Russia, and most European nations would have the technologies developed that would aid in preventing nuclear attacks by rendering any nuclear weapons pointless throughout technological redirection, preventative missiles, or any other cool technologies that first world superpowers have obtained. :3

That's not true, bombs and aircraft carriers both came out in World War I, just saying.

Also, thinking that North Korea "might" have this, or "might" have that will only lead to paranoia. So, while you don't want to underestimate an enemy, nor do you want to overestimate an enemy.

Think about things from this perspective; the US developed nuclear capabilities 60 some years ago, and, as such, the United States government has a much stronger knowledge of said weapons, while North Korea has only just begun to develop these weapons. So, while these smaller nations have been working on obtaining these technologies, and disputing among themselves, nations like the US have been working on defensive technologies, and different uses for the aforementioned weapons alike. - So, whether North Korea has these technologies or not doesn't matter, they are only going to be proved to be utterly useless in any war that may come forth from this conflict.

I really doubt that Russia would step into this war.

What's in it for them? Russia is powerful, and intelligent, they surely understand that a conflict with the US isn't simply a conflict that will be taking place half-way around the world. The US is everywhere, and her allies are everywhere, and a powerful nation such has Russia or China is sure to know that. If North Korea does start something with the US, China won't step in to save a country that isn't worth the expended resources. North Korea has been doing a lot to destroy relations with China in the past few years, and the risk is too great frankly, and, ultimately, South Korea has a very powerful army, and is sure to help the US, and the same goes for Japan.

You say that North Korea could form alliances with China and Russia, but they haven't, and they are unlikely to do so. China and the US are strong allies as well, and China has shown signs recently of backing away from North Korea as allies. Furthermore, one or two powerful allies doesn't add up to the multitude of strategically placed miltary bases, and allies that the US has; the UK, France, (Every major nation in Europe, more or less), South Korea, Japan.

North Korea isn't allowed to have Nukes because their government isn't well enough developed to control that power.

The US is considered to be the superpower this day in age, and when a country that isn't involved in any sort of international relations threatens to destroy a nation such as the US which has many allies and helps to lead the UN through struggles, you're going to have a problem. It's not just the US that doesn't want North Korea to have Nukes, it's all of the world; it's Britain, France, Spain, Portugal, Germany, the reason that it looks as though only nations related to America hold a grudge against North Korea, it's because the US has strong international relations, and North Korea has done really well in the past few days with crippling their own relations and pissing off powerful Nations.