This highly topical volume presents pioneering research for the purpose of developing a common analytical foundation and framework for the emerging interdisciplinary research field of investment control. Long considered as exceptional measures, restrictions on inward foreign direct investments (FDI) have become ever more common and accepted. This book presents different perspectives on how decision-makers go about the tasks of assessing risks and threats to national security that may be posed by FDI and then balancing those risks and threats against economic interests of parties concerned and society at large.