Much has been written on the United Kingdom’s (UK’s) “presumption to derogate” from the European Convention on Human Rights (ECHR) in military operations abroad. Obviously, the government’s announcement to anticipate a general derogation under art. 15 ECHR in case the UK engages in future deployed operations has been subject to severe criticism. [---] The ECtHR seems to have developed a new standard – the standard of “arbitrariness” – in case of genuine norm conflicts between the ECHR and other international regimes like international humanitarian law. [---]