This essay provides a comprehensive overview of the International Criminal Court (ICC), exploring its purpose, principles, and authority within the framework of international law. It delves into the ICC's jurisdiction, examining its ability to try individuals for serious offenses, and its relationship with the UN. The essay discusses the complementarity principle, the court's limitations, and the challenges it poses to state sovereignty. It analyzes the ICC's impact on international criminal justice, considering its role in addressing crimes against humanity and war crimes, while also acknowledging debates surrounding its effectiveness and the complexities of its relationship with national legal systems. The essay references key documents and scholarly sources, offering a balanced perspective on the ICC's significance and its ongoing evolution.