SANTA FE, N.M. -- Actress and activist Jane Fonda said she intends to take a cross-country bus tour to call for an end to U.S. military operations in Iraq.

Fonda said her antiwar tour in March will use a bus that runs on "vegetable oil." She will be joined by families of Iraq war veterans and her daughter.

Fonda was speaking Saturday in Santa Fe, N.M., where she was promoting her book, "My Life So Far." The actress released the book in April, which among other things gave her side of the story in regard to her controversial trip to North Vietnam in 1972.

Prompted by a question from the audience, Fonda said war veterans she has met on a nationwide book tour have encouraged her to break her silence on the Iraq war.

Fonda said she has not taken a stand on any war since the Vietnam War.

Fonda incited controversy in July 1972 when she was photographed sitting on a North Vietnamese anti-aircraft gun while on a tour of the country to drum up support for ending the war.

During a book tour stop in Kansas City in April, a Vietnam veteran spit in Fonda's face. She declined to press charges.

The actress was recently featured in her first film in 15 years, "Monster-in-Law."