Trump spared nothing as he laid into Bush over issues ranging from Iraq to his media diet.

"He reads 60 books a year. He reads a book a week. Do you think the president reads a book a week? I don't think so.

"He doesn't watch television. Now, one thing I know is when I'm on television, I watch, or I try. You do. Your own ego says, let's watch. Whether good or bad, you want to watch.

"He doesn't watch television. He's on television being interviewed by you or someone else, he doesn't watch. Does anyone really believe that?"

Trump also took aim at Vice President Dick Cheney and accused him of deluding the public into believing that the Iraq situation had really improved.

"I don't know if they're bad people. I don't know what's going on. I just know they got us into a mess, the likes of which this country has probably never seen," Trump said. "It's one of the great catastrophes of all time."

Asked whether he was considering a bid to succeed President Bush, Trump said he was 'not interested in running.'

But he did admit that "it would certainly be fun. It would certainly be interesting."