State immunity is an obstacle to exercising jurisdiction by the courts of other states and to be extended to state officials in order to effective application of their functions. By contrast, many of international crimes are committed by state officials; throw abusing the state authorities and powers.
In this article I will response to this question: “Do state officials ever enjoy immunity and could not be tried when commit international crimes”. From distinguishing between functional immunity and personal immunity and reviewing precedents of some national and international courts I conclude that in many cases the immunity is not an obstacle to bringing international criminals to justice.