You got all that right. The second-favorite sport in Afghanistan is shooting at each other. The favorite sport is shooting at invaders. If we invade or attack Afghanistan, we unify the tribes in that country. It is better to work to destabilize the Taliban.
Fighting this war by conventional means would be like wrestling smoke. We need to first secure our own country - these terrorists did not come from the Bekaa valley, they were here for months going to pilot school. We need to investigate EVERY immigrant from the Middle East over the last five years and boot out any one that has any ties to terrorism. Second, we need to cut off the money for terrorism - we need to go to countries with bank secrecy and tell them that a country that harbors the money of terrorists is just as culpable as a country that harbors terrorists themselves. THEN we move against the governments that harbor terrorists and the LEADERS of the terrorists. If we kill a thousand mujadeen, there will be three thousand new recruits the next day. We have to find the heads of this beast AND KILL THEM. But widespread, undisciplined violence against the peoples of the Middle East will only make matters worse.