This research discusses the rules for human rights violations within the framework of international law and the forms of responsibility for these human rights violators. This research method is normative juridical. This research concludes firstly, that the 1949 Geneva Convention regulates the state's obligation to process punishment for individuals involved in the crime of genocide or other crimes regulated in the convention, namely a legal process that is tried through a court and sanctions that include imprisonment. Sanctions that can be given include paying compensation and carrying out prosecution in accordance with the 1949 Geneva Convention and 1977 Additional Protocol I. Second, b. Gotabaya Rajapaksa is suspected of having committed serious human rights violations as regulated by International Humanitarian Law (IHL). For this reason, Gotabaya Rajapaksa can be tried by the International Criminal Court (ICC). The ICC has the authority to try Gotabaya Rajapaksa regardless of whether Sri Lanka has ratified the 1998 Rome Statute or not. And the sanctions given are completely determined by the panel of judges at the ICC.