I'm assuming that nobody here completly hates the states and are mostly GOD faring people.
You're wrong in that assumption, actually. There are in fact a great number of atheists, anti-religious, agnostics, and what not on these forums. Look at the results of the 'is there a God' thread. However, I don't know how in the world 'God fearing' and loving the States go together, unless you have that patrio-religious fervour for your country. Personally, I consider myself God-fearing, but have no particular affinity for the States. Okay, I don't completely hate them, but they're the big bully down south for me, most of the time.
However, as I am God fearing, I must adamantly suggest to you not to take Revelation as a literal book. No, the 'end of the world' has not begun, most defenitely not as outline in Revelation. That book is not a bloody outline for the end of the world, so stop trying to scare yourself with it. It is, mostly, a metaphorical account of the writer's current times. My favorite example, the Beast. Heck, I know who that is, it's painfully obvious! The emperor Domition. For who else in that era persecuted as he did; who else used blasphemous names as he, when he demanded to be called 'dominus et deus'... Lord and God? It makes perfect sense, you know. It's a quasi-mystical condemnation of things happening at that time. In fact, 'apocalyptic' was a common genre at the time to write things in, one that is mostly lost and misunderstood these days (hence those who take it literally, a grave error.) Think about a movie like Dawn of the Dead, alright? I'm assuming you've seen it. Well, it's apocalyptic, end of the world, right? Now, fast forward two thousand years, and have someone watching it... and assuming it is a prediction of the end times. That's about the equivalent of what is done with Revelation. The truth is, Dawn of the Dead is in many ways a commentary on current culture... just as Revelation was. The only bits of Revelation that can be considered eschatology are the bits talking about heaven in the very beginning... but none of it talks about wars and famines or any of that sensational stuff that people are so quick to lach on to.
So, no, as a fellow Christian, I can tell you without any shadow of doubt, the Bible does not tell you how the end will happen. Or at least not in Revelation it doesn't. Actually, Jesus says the bloody opposite... when you hear rumours of wars and famines and all that, DON'T be alarmed. If you really insist on reading Revelation (it's probably the most unimportant and misunderstood book anyway. Do you know why it's at the end of the Bible? It was put there because they figured it would cause just this sort of confusion and be taken literally, so it was relegated to the most unimportant place), don't read it literally. Or, look at it as a declamation of the year 100.
On topic, I'm not too worried. As has been said, those countries have few allies. To begin a nuclear war would utterly destroy them. They could cause damage to the major western powers, it's true, but we could survive that. It would be a devastating blow, but not our utter destruction. On the flipside, Iran and Korea would be uninhabitable for the next million years. The US has enough firepower that in a thousand years kids could be learning about the great 'gulf of Iran'. That is a major deterrent. And anyway, this sort of warring and posturing has been going on since before recorded history, and will continue. As ZeaLitY said. And that would hold true even should something like a world government ever come to be. There will always be dissenting factions, so that some sort of warring will always be afoot.