Long before the coming of the Bill of Rights in written Constitutions, the common law has had the greatest regard for the personal liberty of the individual. In order to safeguard that liberty, the remedy of habeas corpus was always available to persons deprived of their liberty unlawfully. This ancient writ has been incorporated into the modern Constitution as a fundamental right and enforceable as other rights protected by virtue of their entrenchment in those Constitutions. This article aims to bring together the various understanding of habeas corpus at common law and the principles governing the writ in common law jurisdictions. The discussion is approached through a twelve-point construct thus providing a brief conspectus of the subject matter, such that one could have a better understanding of the subject as applied in most common law jurisdictions.

This article presents an interdisciplinary comparison of British and German legal arguments concerning the justification of the use of force against the Islamic State in Iraq and Syria (ISIS). It is situated in the broader framework of research on strategic culture and the use of international law as a tool for justifying state behaviour. Thus, a gap in political science research is analysed: addressing legal arguments as essentially political in their usage. The present work questions whether differing strategic cultures will lead to a different use of legal arguments. International legal theory and content analysis are combined to sort arguments into the categories of instrumentalism, formalism and natural law. To do so, a data set consisting of all speeches with regard to the fight against ISIS made in both parliaments until the end of 2018 is analysed. It is shown that Germany and the UK, despite their varying strategic cultures, rely on similar legal justifications to a surprisingly large extent.