Probably both, and some other TBI-producing events as well.
Evangelizing democracy was what turned a quick break-shit-and-move-on war in Iraq into a bottomless cluster****, and intervening 'For human rights and the cheeeeeeeeeldrun' on behalf of one group of murderous thugs over another one is what created another one in Libya, and may yet create an even bigger one than both combined in Syria. Biden, McCain, and the rest of the Old Guard who actually believe this bullshit works short of destroying the target country down to the Bronze Age and then putting the pieces back together the way you want them over 40 years can go to Hell.