Here's an interesting debate in the LA Times between Hugh Hewitt and Doug Brandow on where we stand six years after 9/11/2001. I don't agree with either of them completely, but I would say this quote from Hugh Hewitt makes some sense:
No sane person can look at the last six years and see unbroken success or decisions that he or she didn't wish had been made differently.
But the invasions of Afghanistan and Iraq aren't among them. Not even the Petraeus-slanderers at MoveOn.org debate the decision to topple the Taliban. But the world is also much safer today because Saddam Hussein was overthrown and his mad-as-hatter sons are dead and not in line for the throne; the U.N. oil-for-food-for-dictators-sending-money-and-arms-to-terrorists-while-corrupting-officials-in-other-governments was exposed and ended; Libya's WMD program was dismantled; scores of Al Qaeda's senior leadership are dead or imprisoned (with more ending up that way each week), the A.Q. Khan network has been cabined; and the U.S. military is embedded with new or longtime allies around the world, teaching them the basics of counter-terrorism.
Read the whole thing.