If Bush did not start it, who did?
Al-Queda based in Afghanistan.
Who do you think started it?
Your statement is slightly misleading. AQ was never proven to be "based in Afghanistan". It was widely accepted (since the Bush "administration" kept stating) that ObL was holed up in Afghanistan so there was a lot of support for going into Afghanistan to take him out.
To put forth the idea that Bush did not start a "war" with Afghanistan by invading it, is slightly disingenuous, in my opinion.
To be really technical in your favor though, I can't recall Bush every officially "declaring war" on either Afghanistan OR Iraq. I would submit that neither instances of military action could be considered real "wars" especially since the people that are shooting at our military are not actually members of any official military of a sovereign nation. Since those people are basically guerrilla warriors, I would say that we are invaders and occupiers and those trying to shoot at our military at rebels.
But whatever these military excursions are called, I don't see how one can possibly put forth the idea that Bush didn't start either one of them.
To extrapolate on this though, I find it odd that when "terrorists" come into our country and then flee into Afghanistan (who may harbor them but not necessarily direct them or fund them), Afghanistan, a whole nation and its government, is then to held totally accountable for all of those "terrorists" actions.
But when someone in the Bush "administration" is shown to be a criminal of some kind, true of some lesser kind of crime than killing 3000 innocents, that person is somehow a rogue or lone nut or acting on his own and the "administration" is in no way accountable for anything that individual has done.
Would you square that circle for me?