I'm of the opinion that the world's near term future is very bleak (I agree with RR though that ultimately God's kingdom will prevail). The many things mentioned in the various posts on this topic such as terrorism, pollution, nuclear proliferation, etc. are facts of life and out of control. The one factor that mankind has no control over however is the world's "oil supply". Oil is a finite resource and is in the opinion of many experts (do a Google search on "Peak Oil" or try this link http://www.lifeaftertheoilcrash.net/) going to very rapidly become far too scarce to meet human needs. The soon-to-be end result is a disaster (war, starvation and world chaos).
I know this sounds like doom and gloom but simply check out the rising energy costs and one can see that something is afoot. And, who really believes that the USA invaded Iraq because of Saddam Hussein or weapons of mass destruction? Maybe the real reason is a jockeying for a controlling position over most of the world's known oil reserves. Of course the other world powers (Red China, North Korea, France and so on) are not going to quitely stand by when they also have a stake in all of this.
FM