While citizens of developed countries enjoy lives of unmatched affluence, over a billion people struggle to subsist on incomes of less than $1/day. Can't we conclude that their poverty constitutes a glaring injustice? The answer almost certainly is yes—but not because some countries are rich, nor because of inadequate levels of redistribution. Liberal political theory traditionally maintains that persons are rights-holders, and the primary duty owed them is noninterference. Corrupt and tyrannical governments flagrantly violate the liberty rights of their captive populations. External governments conspicuously fail to respect noninterference, however, when they erect barriers to trade between foreign nationals and their own citizens, subsidize domestic industries, prevent innocent movement across borders by would-be workers, and when they tender assistance to abusive states (such as foreign aid that lines the pockets of kleptocrats and enhances their power). The theory advanced here is similar to that of Rawls in rejecting an international difference principle, but unlike Rawls it advances an account of international justice as continuous with domestic principles of justice.