Abstract

This article examines the claim recently put forward by Terry Nardin, Kok-Chor Tan, and Carla Bagnoli that humanitarian intervention ought to be conceived, not as an imperfect duty (a duty of assistance to the victims of crimes against humanity left to the discretion of the members of the international community), but—assuming that the permissibility conditions have been satisfied—as a perfect duty (an unconditional obligation demanded by justice). After explaining why such a position can be considered as legitimate, it underlines some of its difficulties and provides the elements of a response in order to overcome them.