Without sensationalizing or providing the technical details that would result in a terrorist's handbook, the volume reflects the concerns expressed by experts from 12 states (including many from Slavic regions adjoining or aspiring to membership of the European Union). A range of vulnerabilities are highlighted that are usually neglected. Assessments that focus on the horrifying potential of bioterrorism directly targeting people are commonplace. This book is exceptional because indirect impacts on human health and welfare through challenge to the security of food supplies are the focus. These urgently need to be recognised and made subjects of planned investment to counter the threat. Examples of past state-sponsored and independent actions are discussed. The evolution of biological (chemical defoliant) systems for controlling plant growth with unambiguously humanitarian aims is shown to have resulted in a range of counter terrorist uses. These experiences provide a background for discussion that draws upon experience in tropical and temperate regions and spans the potential for harm offered by naturally occurring plant pathogenic viruses targeting food plants or forestry. Management options are addressed and the need for protection is set against the risk of discouraging biotechnological advance.