This volume presents a collection of essays that are arranged in a pro versus con format that debate four main questions about biological warfare. Chapter one considers how great a danger these weapons pose. Chapter two asks what entities post a serious biological warfare threat. Chapter three asks how the United States should prepare itself and chapter four asks how biological warfare can be prevented. Readers benefit from more than one intelligent viewpoint that answers each question. Essay sources include Bob Graham, Allison Macfarlane, Jeffrey W. Runge, Stefan Riedel, James Thuo Njuguna, and Gigi Kwik Gronvall.