David Lodder, currently working for the Development Department of the ICDT, has elaborated a comprehensive analysis addressing issues regarding the moral permissibility of measures aimed at defeating a proclaimed terroristic threat, often forcing us to choose between deontological and consequentialist conceptions of morality. The paper reflects on international-legal limitations and how the identifiable white and black zones of legality might fade to grey, putting up moral and ethical dilemmas for political and public consideration, involving also theoretical views of ethics and morality.