Consider three cases: -/- Turn: A trolley is about to kill five innocent strangers. You can turn the trolley onto me, saving the five and killing me. -/- Hurl: A trolley is about to kill five innocent strangers. You can hurl me at the trolley, saving the five and paralyzing me. -/- TurnHurl: A trolley is about to kill five innocent strangers. You can turn the trolley onto me, saving the five and killing me. You can instead hurl me at (...) the trolley, saving the five and paralyzing me. -/- Most find the following four claims intuitively plausible: -/- (1) It is permissible to turn the trolley onto me in Turn. (2) It is impermissible to hurl me at the trolley in Hurl. (3) It is impermissible to turn the trolley onto me in TurnHurl. (4) It is permissible to hurl me at the trolley in TurnHurl. -/- But how does turning go from permissible to impermissible, and hurling from impermissible to permissible, when both alternatives are available? I argue that such “secondary permissibility” claims are explained by contrastive consent. Even if I do not consent to being harmed, it is likely I’ll consent to being hurled at the trolley rather than being turned onto. (shrink)

Acts of futile resistance—harms against an aggressor which could not reasonably hope to avert the threat the aggressor poses—give rise to a puzzle: on the one hand, many such acts are intuitively permissible, yet on the other, these acts fail to meet the justificatory standards of defensive action. The most widely accepted solution to this puzzle is that victims in such cases permissibly defend against a secondary threat to their honour, dignity, or moral standing. I argue that this solution fails, (...) because futile resistance is not plausibly regarded as defensive in the relevant sense. I propose instead that futile resistance is justified as a form of protest, where protest is analysed as an expression of rejection of victims’ wrongs. Such protest is justified, I argue, when and because it is the fitting response to the circumstances of futility. (shrink)

Which harms and benefits should be viewed as relevant when considering whether to launch cyber-measures? In this article, we consider this question, which matters because it is central to determining whether cyber-measures should be launched. Several just war theorists hold a version of what we call the ‘Restrictive View’, according to which there are restrictions on the sorts of harms and benefits that should be included in proportionality assessments about the justifiability of going to war (whether cyber or kinetic). We (...) discuss two such views – the Just Cause Restrictive View and Rights-based Restrictive View – and find both wanting. By contrast, we defend what we call the ‘Permissive View’. This holds that all potential goods and bads should be included in proportionality decisions about cyber-measures, even those that appear to be trivial, and where the various harms and benefits are given different weights, according to their agent-relative and agent-neutral features. We argue further that accepting the Permissive View has broader implications for the ethical frameworks governing cyberwar, both in terms of whether cyberattack provide just cause for coercive responses, including kinetic warfare and cyber-responses, and whether cyber-measures should be governed by just war theory or a new theory for cyber-operations. (shrink)

Defence cases with an escalatory structure, in which the levels of violence between aggressor and defender start out as minor and then become major, even lethal, raise sharp problems for defence theory, and for our understanding of the conditions of defence: proportionality, necessity, and imminence. It is argued here that defenders are not morally required to withdraw from participation in these cases, and that defensive escalations do not offend against any of the conditions of defence, on an adequate understanding of (...) them. No plausible interpretation of proportionality or necessity excludes defensive permissions in escalatory cases. Moreover, the structure of escalatory defensive cases also sheds useful light on permissible responses to conditional deadly threats. This is because we can analyse conditional deadly threats as disguised cases of escalation. Because defensive resistance is permissible in escalatory cases, it is also permissible in cases involving conditional deadly threats. (shrink)