The fiscal year 2003 defense authorization bill approved by the House and Senate this week proposes to ban, for one year, the expenditure of funds for work on nuclear interceptor missiles. The Pentagon has said it is not interested in nuclear-tipped interceptors for national missile defense and has no plans to develop them. However, earlier this year William Schneider, the chairman of the Defense Science Board, gave a speech in which he said Defense Secretary Donald Rumsfeld had encouraged the...