War should be understood as an actual, intentional and widespread armed conflict between political communities. Thus, fisticuffs between individual persons do not count as a war, nor does a gang fight, nor does a feud on the order of the Hatfields versus the McCoys. War is a phenomenon which occurs only between political communities, defined as those entities which either are states or intend to become states (in order to allow for civil war). Classical war is international war, a war (...) between different states, like the two World Wars. But just as frequent is war within a state between rival groups or communities, like the American Civil War. Certain political pressure groups, like terrorist organizations, might also be considered “political communities,” in that they are associations of people with a political purpose and, indeed, many of them aspire to statehood or to influence the development of statehood in certain lands. (shrink)

If I decide to disclose information about myself, this act may undermine other people’s ability to conceal information about them. Such dependencies are called privacy dependencies in the literature. Some say that privacy dependencies generate moral duties to avoid sharing information about oneself. If true, we argue, then it is sometimes justified for others to impose harm on the person sharing information to prevent them from doing so. In this paper, we first show how such conclusions arise. Next, we show (...) that the existence of such a dependency between the moral significance you are inclined to attribute to privacy dependencies and judgments about permissible self-defense puts pressure on at least some ways of spelling out the idea that privacy dependencies ought to constrain our data-sharing conduct. (shrink)

Over the past 20 years, there has been a huge amount of work on which things you can kill in self‐defense and why. This paper surveys that work.

Philosophers have had trouble defending the common sense view that it is permissible to impose significant cost on an innocent person who is about to harm you to prevent the harm from occurring. In this paper, I argue that such harm can be justified if one pays attention to the moral significance of imposing a cost on others. The constraint against harming people who give rise to cost by their presence or movements is weaker than the constraint against harming bystanders. (...) Moreover, I argue that people who give rise to cost have a duty to take on some of that cost to help protect the person under threat. (shrink)

Why does it matter that those who fight wars be authorized by the communities on whose behalf they claim to fight? I argue that lacking authorization generates a moral cost, which counts against a war's proportionality, and that having authorization allows the transfer of reasons from the members of the community to those who fight, which makes the war more likely to be proportionate. If democratic states are better able than non-democratic states and sub-state groups to gain their community's authorization, (...) this means that some wars will be proportionate if fought by democracies, disproportionate if not. (shrink)