Global political actors of all kinds exert influence in societies beyond their own in myriad ways, including via public criticism, consumer boycotts, divestment campaigns, sanctions, and forceful intervention. Often, they do so in the name of justice-promotion. These attempts to promote justice in foreign societies raise several moral questions. For example, are there ways to promote one's own ideas about justice in another society while still treating its members tolerantly? Are there ways to do so without disrespecting their legitimate political institutions or undermining their collective self-determination? This book addresses these and other questions to develop ethical principles we can use to determine whether a proposed attempt to promote justice in a foreign society is morally permissible.