The "destabilized" the Middle East comment was a bit dishonest. OK, real dishonest.
Which president and presidential candidate helped terrorists overthrow a legitimate government in Libya? Which president and presidential candidate helped install a Muslim Brotherhood dictator in Egypt? Which president and presidential candidate has armed terrorists to overthrow the government in Syria? Which president removed all US troops from Iraq against the advice of senior military personnel? Which president made and then pussied away from "the red line?" Which president watched incompetently as Russia annexed a significant chunk of a sovereign country?
These could all be Bush's fault, but since Bush only served two terms, somebody would have to explain the details of how that would be the case to me.