The paper addresses a puzzle about the proportionality requirement on self-defense due to L. Alexander. Indirectly the puzzle is also relevant to the proportionality requirement on punishment, insofar as the right to punish is derived from the right to self-defense. Alexander argues that there is no proportionality requirement on either self-defense or punishment, as long as the aggressor/offender has been forewarned of the risk of a disproportional response. To support his position Alexander appeals to some puzzle cases, challenging us to (...) explain why the requirement applies in some of them when it clearly does not in others. The paper responds to his challenge by answering two questions: why does the proportionality requirement exist in the first place, and when does it apply? The paper argues that the requirement holds because of our need to protect our rights from violation, and that it applies to cases where the person defending his rights counts as having imposed a cost on one of the offender’s options. An account is offered of when such cost imposition occurs. (shrink)

Neurointerventions—interventions that physically or chemically modulate brain states—are sometimes imposed on criminal offenders for the purposes of diminishing the risk that they will recidivate, or, more generally, of facilitating their rehabilitation. One objection to the nonconsensual implementation of such interventions holds that this expresses a disrespectful message, and is thus impermissible. In this paper, we respond to this objection, focusing on the most developed version of it—that presented by Elizabeth Shaw. We consider a variety of messages that might be expressed (...) by nonconsensual neurointerventions. Depending on the message, we argue either that such interventions do not invariably express this message, that expressing this message is not invariably disrespectful, or that the appeal to disrespect is redundant. (shrink)

This paper discusses the novel versions of the right intention and proportionality conditions in the ius ad bellum proposed in Chapter 3 of Frances Kamm’s Ethics for Enemies. It argues that Kamm is right to weaken the right intention condition to require, not positively intending a war’s just cause, but only having that cause’s presence be a necessary condition for war, but wrong to place no limits on why one makes a just cause necessary. It then argues that the weakening (...) she proposes of Jeff McMahan’s very strict interpretation of proportionality does not go far enough. She argues that “conditional just aims” such as disarming an aggressor and deterring future aggression can count toward a war’s proportionality only if they will follow from harms needed to achieve the war’s initial just cause but not if they require additional harms. The paper argues that such aims can justify additional harms. (shrink)

Thomas Hurka derives rights to punish from what I will term the Libertarian Rights Principle, which is “that there is really only one natural right, namely the equal right of all persons to the most extensive liberty compatible with a like liberty for other persons, and that all other natural rights are species or instances of the right to liberty.” These rights to punish, he says, extend only to punishing violators of rights, never to “punishing” the innocent; extend only to (...) punishing for violations pursuant to intentions publicly announced prior to these violations; are subject to the “upper limit qualification” that a permissible punishment for the violation of a right cannot be an act that would violate a more important right ; and are subject to the “minimum necessary qualification” that a punishment p for violating a right r is not permissible if a punishment p' that would, were it permitted, violate a less important right than would p, would protect r as effectively as would p. (shrink)