La teoría de la justicia: más allá de los límites nacionales

Theory of justice generally addresses issues within national borders, which means that justice and injustice only take into account what happens inside the borders of a country and those are recognized as citizen of that country. However, in recent years the debate around theory of justice has focused not only on what an injustice is, but also on who should be taken into account as subject of justice. Injustice could be also understood as the exclusion performed by institutions towards subjects who are not taken as citizens, making it impossible for them to claim justice. So the question is: how can we establish who is a legitimate subject of justice?