There has always been something psychological going on with McCain. In his acceptance speech he said that, before his POW experience, he used to do things just to draw attention to himself (I’ve linked that before). And he implied that he put those bad habits behind.
He didn’t. I agree he is jealous, or covetous of Bush and others. That’s part of what causes him to backstab, and he also still does things to draw attention to himself. He (and his lovely daughter) well understand that the way to stay in front of the TV cameras is to criticize and undercut Republicans and especially conservatives.
McCain has been insane for a long time. Go back to before his nomination in ‘08. There’s a lot of credible history of McCain as not bright, egomaniac, immature and unreliable. Breaking McCain by the Viet Commies would have been complete and he may very well be a real manchurian candidate. McCain would have been a hero if he had not returned from SE Asia but no one should trust McCain, he is an enemy for all of us!