(CNN) - Former Vice President Dick Cheney says he was "probably" the strongest advocate in the Bush administration of a military strike against Iran's nuclear program.
Cheney told FOX News Sunday in an interview conducted Friday that he believed the military threat was crucial to negotiations with Iran on ending its efforts to develop a nuclear weapon.
"I was probably a bigger advocate of military action than any of my colleagues," Cheney said. "I think it was very important that the military option be on the table. I felt that negotiations couldn't possibly succeed unless the Iranians believed the military option was on the table."
Asked if he opposed former President George W. Bush's decision to enter negotiations with Iran and European nations on the issue, Cheney said he would discuss the matter further in an upcoming book on his life.
However, he said a recent Washington Post story that reported he will criticize Bush in his book was wrong.
"We had policy differences, no question about that," Cheney said. "But to say that I was disappointed with the president isn't the way it ought to be phrased."
When asked again if he believed that Bush went "soft" in his second term, as reported in the Washington Post story, Cheney replied: "No, I'm not going to speculate on it. I'm going to write a book that lays out my view of what we did."