Financial sanctions have become important instruments of regulatory and foreign policy in recent years. Following 9/11, the leading G10 developed countries have increasingly been using targeted financial sanctions against designated states, international terrorist organizations, drug traffickers, and their commercial and financial supporters. This book provides the first in depth study examining the post-9/11 financial sanctions programmes in the US and Europe, and the key regulatory and legal issues that confront businesses and related liability issues for third parties and individuals.