M. Leitenberg: In a way, this was far more secret than the nuclear program, because the Soviet Union could say there was a nuclear weapon program, of course. But that was never, never admitted to in the Soviet period. And then, when Yeltsin finally made a statement in February or March, '92, and a few months later they gave the first, what was called, "confidence-building measure" to the Biological Weapons Convention, well sorry, the first one that we forced a little honesty, because they gave one in 1987 and said they had no program. And '88, '89, '90,' 91, they repeated that: no program. Then the Americans and the British... there was a period after Pasechnik's defection, late... last week in October, '89. It took three, four months, starting in January, February. Prime Minister Thatcher, President Bush, Secretary Baker, the American and British ambassadors all started very heavy pressure on Shevardnadze, and on... on Gorbachev directly. And one of the issues was this piece of paper, this "confidence-building measure." We said, "Unless you report what you honestly had..." (and you were supposed to write a little more; the American version of that is ninety pages). So, Russia finally gave six pages, and said one line. It said, "The Soviets had..." Nothing about Russia. But that was the first public admission that... made by the Yeltsin government, that the Soviet government had had an offensive biological weapons program, and they said, "since 1928."