Claude Allen, U.S. Secretary of Health and Human Services, warned that the U.S. food supply is vulnerable to a bioterrorist attack.

Despite deep skepticism about the credibility of captured Al Qaeda leader Abu Zubaydah, the U.S. intelligence community is taking seriously his claim that his organization has the capability of building a radioactive "dirty bomb," according to a U.S. intelligence official.

The U.S. Congress Congress is taking up the question of whether the U.S. should continue its post-Cold War policy of lowering its military nuclear profile or instead embrace a new Bush administration program to research and develop a family of tactical nuclear weapons intended for use against terrorist enclaves and hostile nations.