Jane Fonda regrets her visit to a North Vietnamese gun site in 1972, the actress and fitness guru said in an interview with CBS television show "60 Minutes" to be aired on Sunday. The actress defended her trip to Vietnam in 1972, which won her the nickname "Hanoi Jane." But she said her visit to a North Vietnamese anti-aircraft gun site used to shoot down U.S. pilots was a "betrayal" of the U.S. military. "The image of Jane Fonda, Barbarella, Henry Fonda's daughter ... sitting on an enemy aircraft gun was a betrayal," she said, calling the act, "The largest...