The ICRC has just published its interpretative guidance on the notion of direct participation in hostilities. This is a product of many years’ work and several consultations with eminent experts – though of course many experts would not agree on all of the ICRC’s conclusions, which are purely the organization’s own. At any rate, since this is one of the most contentious questions of modern IHL, this study will surely be influential and much discussed. I might post some comments on it once I have had the time to read it.