Check out this story about how al-Qaida is training young boys (about 10 years old) to capture and kill civilians. We are in a fight with completely insane and irrational people...people who train children to kill and who place explosives on mentally retarded woman to cause bloodshed (see 2nd link for the story about what happened in Baghdad last week).
This was is not amenable to military tactics. It is not "trench warfare" of WWI or "jungle warfare" of Vietnam. This is like fighting thousands of crazy tazmanian devils that keep multiplying the more you fight against them. I don't know what it will mean "to win this war" or when we will ever get out of there. Their hatred for Americans, for other Muslims, and for humanity is too great.