This Congressionally-mandated report was written by the Commission on the Prevention of WMD Proliferation and Terrorism; they were "given a charter to assess, within 180 days, any and all of the nation’s activities, initiatives, and programs to prevent weapons of mass destruction proliferation and terrorism. We were also asked to provide concrete recommendations—a road map, if you will—to address these threats."
It states that, "The commission believes that unless the world community acts decisively and with great urgency, it is more likely than not that a weapon of mass destruction will be used in a terrorist attack somewhere in the world by the end of 2013. The Commission further believes that terrorists are more likely to be able to obtain and use a biological weapon than a nuclear weapon. The Commission believes that the U.S. government needs to move more aggressively to limit the proliferation of biological weapons and reduce the prospect of a bioterror attack.".