Abstract
This paper considers the implications of Chiara Lepora and Robert Goodin's On Complicity and Compromise (OUP, 2013) for our understanding of international law. That volume systematizes and evaluates individuals’ ethical choices in getting (too) close to evil acts. For the law of nations, these concepts are relevant in three critical ways. First, they capture the dilemmas of those charged with implementing international law, e.g., Red Cross delegates pledged to confidentiality learning of torture in a prison. Second, they offer a rubric for understanding when a state may use coercion against certain actors, e.g., international law's rules for when one state may use force against another based on the latter's ties to terrorist acts. Third, they offer a moral grounding for many international obligations of states based on the need to avoid their own complicity in others' wrongs, e.g., by not expelling refugees to a state persecuting them or by preventing private actors from committing human rights abuses. In the case of the last two, the law reflects decisions by states about how much complicity they will tolerate – either complicity by others or complicity by the states themselves.