Rudy Giuliani is a guest on "Piers Morgan Tonight" this evening – making him the guest with the most appearances on the show this year. He talks about the growing war of words between Newt Gingrich and Mitt Romney. "You can empathize and sympathize with Newt," Giuliani tells Piers Morgan. "I think what was done to him in Iowa was horrible."
But he doesn't agree with Gingrich's strategy now: "Newt should contain that anger and should stick with intellectually honest attacks on Romney." Watch the full interview tonight – also on the show: "The Obamas" author Jodi Kantor.