While many books discuss how nations can prevent the proliferation of biological and nuclear weapons, this unique and controversial volume begins with the premise that these weapons will certainly multiply despite our desperate desire to slow this process. How worried should we be and what should we do? In From Lambs to Lions, Thomas Preston examines current trends in the proliferation of nuclear and biological weapons capabilities, know-how, and technologies for both state and non-state actors-and then projects these trends over the coming ten to fifteen years to assess how they might impact.