When one state commits an international wrong against another – for example by breaching a treaty or by polluting its air space or water, or else by attacking it in an act of aggression – it incurs international responsibility to the injured state.
In such a case, the delinquent state must desist from the wrongful conduct and make reparations to the injured state.
However, a state can also incur indirect state responsibility to another. This may happen when it injures a foreign person or foreign corporation who happens to be within its territory. That is so because states must treat foreigners who visit their territories according to minimum standards prescribed by international law. If they do not, they directly injure the foreigner but they also indirectly injure the state that the foreigner belongs to. A state is indirectly injured when its nationals are harmed because international law views the nationals of a state as constituent elements of the state itself.
