They played PC and didn't really commit troops and men to defeat the insurgency. The American people wondered why it kept dragging on. True, World War II took four years and we're still only in the third year of the war with a fraction of the casualties we had on a single day in World War II. People tend to lose perspective when comes to the long term historical picture. Above all, the war against Islamofascism will not end in our own lifetime. Like it or not, we are the world's policeman.
"Show me just what Mohammed brought that was new, and there you will find things only evil and inhuman, such as his command to spread by the sword the faith he preached." -Manuel II Paleologus
They played PC and didn't really commit troops and men to defeat the insurgency. Wrong kind of troops (we need more Special Forces) and refusal to use all of the weapons at our disposal (such as refusing to bomb the Triangle of Death), as well as prosecuting our own guys on the word of the enemy for doing their jobs too well.