Re: wwIII what will be the catalyst?
Well assuming your not a person who believes the war on terror isnt WWIII (there are people in the world who think it is), I would keep an eye on either Israel/ Iran and Syria, or China. Right now the U.N. is doing practically nothing to prevent Iran from aquiring Nuclear technologies that can (and probably will) be used to create Nuclear Weapons. I do not think Israel will let Iran aquire those weapons. I think that they would late until they had to act and would then strike the areas that have already been found where Nuclear plants are being created. In fact 4 months ago there was an article in either the New York Times or some other paper that had an interview with Israeli military officers that had hinted that Israel was preparing for such a case. Israel has shown that they dont care what anyone thinks and that theyll do what they think is in their best interests.
Now war with China wont be coming at least for 5 to ten years because right now they still rely a bit on the U.S. economy (900 billion dollars in the U.S. economy last I checked) and starting a war now would only hurt the chinese worse. However in about 5 to 10 years China could conceivably become self sufficient enough to be able to sustain a war with the U.S and by then Russia might even be able to come in.
I don't see Russia itself as a threat right now because they can't afford a war with just about anyone. Their economy is still in the building stages and their military power isn't good enough technologically to be able to compete with the U.S and her allies. Same goes with North Korea as they cant afford to do anything either, theyre just trying to scare everyone while hoping they dont completely tick someone off.
Well thats my view, feel free to correct me if I'm wrong. ^^