Your link seems to argue that peace interventions aren’t maximally efficient, not that they’re not useful. As for why peace is a good metric to use, war (for the majority of the population affected) is a sufficiently clear negative that it would take extremely strong arguments to show peace is not an important positive good. Just look at the revealed preferences of refugee flows, if nothing else.
Your link seems to argue that peace interventions aren’t maximally efficient, not that they’re not useful. As for why peace is a good metric to use, war (for the majority of the population affected) is a sufficiently clear negative that it would take extremely strong arguments to show peace is not an important positive good. Just look at the revealed preferences of refugee flows, if nothing else.