Terrorist attacks in Norway, Germany, Belgium, Holland, France and Turkey showed that Europe faces new security challenges. Based on their purpose, terrorist organisations vary widely: They range from large state-like structures to small, decentralised and self-directed networks. How these networks develop and maintain depends to a large degree on their financial sources and funding. The authors look at those aspects of terrorism. They analyse different methods of funding – how terrorist organisations, terrorist cells and individuals raise, move and spend money to support or carry out terrorist activities. The study also takes international responses into account to combat the funding of terrorism.