Global justice is an issue in political philosophy arising from the concern that the world at large is unjust.
Global justice should basically be various of forms of justice that protect the point of the ground which term as internationalism.
Henrik Syse says that the main theory of global ethics and international justice in western tradition is the natural-law tradition which goes back to beyond written record. It has been organized and identifiable teaching within our culture since Latin times of Middle Stoa and Cicero and the early Christian philosophers Ambrose and Augustine. He states "This early natural-law theorizing teaching centered around the idea of a ius naturale, i.e., a system of right which is natural and as such common to all people, available to humankind as a measuring stick of right and wrong."
Marion Young states that "A widely accepted philosophical view continues to hold that the scope of obligations of justice is defined by membership in a common political community. On this account, people have obligations of justice only to other people with whom they live together under a common constitution, or whom they recognize as belonging to the same nation as themselves." Philosopher David Miller also agrees that obligations only apply to people living together or that are part of the same Nation. What we owe one another in the global context is one of the questions the global justice concept seeks to answer. There are positive and negative duties which may be in conflict with ones moral rules.Cosmopolitans, reportedly including the ancient Greek Diogenes of Sinope, have described themselves as citizens of the world. Thinkers including the utilitarian anarchist William Godwin have argued that everyone has an impartial duty to do the most good he or she can, without preference for any one human being over another.
The broader political context of the debate is the longstanding conflict between more and less local institutions: tribes against states, villages against cities, local communities against empires, nation-states against the UN. The relative strength of the local versus the global has waxed and waned over recorded history. From the early modern period until the twentieth century, the preeminent political institution was the state, which is sovereign, territorial, claims a monopoly on the legitimate use of violence in its territory, and exists in an international system of other sovereign states. Over the same period, and relatedly, political philosophers' interest in justice focused almost exclusively on domestic issues: how should states treat their subjects, and what do fellow-citizens owe one another? Justice in relations between states, and between individuals across state borders, was put aside as a secondary issue or left to international relations theorists.