Barlow wrote an analysis for then-Secretary Dick Cheney that concluded the planned F-16 sale violated this law. Drawing on detailed, classified studies, Barlow wrote about Pakistan's ability, intentions and activities to deliver nuclear bombs using F-16s it had acquired before the law was passed.

Barlow discovered later that someone rewrote his analysis so that it endorsed the sale of the F-16s. Arthur Hughes, the deputy assistant secretary of defense, testified to Congress that using the F-16s to deliver nuclear weapons "far exceeded the state of art in Pakistan" -- something Barlow knew to be untrue

In the summer of 1989, Barlow told Brubaker, Rostow and Michael MacMurray, the Pakistan desk officer in charge of military sales to Pakistan who prepared Hughes's testimony, that Congress had been misled.

Within days, Barlow was fired

"They clearly didn't want the nonproliferation policy to get in the way of their regional policy," Gallucci said. "They were worried someone like Rich [Barlow], in his stickler approach, would insist that if there's going to be testimony on the Hill about the F-16 aircraft, that the answers be full and truthful. He was a thorn in their side, and they went after him. And they did a very good job of screwing up his life

Some of the men setting policy at the Defense Department at the time of Barlow's firing -- Stephen J. Hadley, Paul D. Wolfowitz and Dick Cheney -- resurfaced in the current Bush administration, which Democrats and others have accused of shaping intelligence on the Iraq war to fit political goals.