Good article at this link…worth reading.  http://www.nytimes.com/2010/06/13/opinion/13friedman.html

Here is a snapshot…[We are living in a world of cascading and intertwined threats that have the potential to turn our country upside down at any moment. We do not know when the next Times Square bomber might get lucky. We don’t know how long the U.S. and Israel will tolerate Iran’s nuclear program. We don’t know if Pakistan will hold together and what might happen to its nukes. We don’t know when North Korea will go nuts. We don’t know if the European Union can keep financing the debts of Greece, Hungary and Spain — and what financial contagion might be set off if it can’t.

“It is not your imagination,” says corporate strategy consultant Peter Schwartz — there is a lot more scary stuff hanging over the world today. Since the end of the cold war and the rise of the Internet, we’ve lost the walls and the superpowers that together kept the world’s problems more contained. Today, smaller and smaller units can wreak larger and larger havoc — and whatever havoc is wreaked now gets spread faster and farther than ever before.]