"Class A war criminals" refers to individuals who are held responsible for the most serious crimes during wartime, particularly those defined by international law. This category typically includes leaders and high-ranking officials who orchestrate or commit acts such as genocide, crimes against humanity, and violations of the laws of war. The term gained prominence after World War II, particularly during the Nuremberg Trials, where key figures of the Nazi regime were prosecuted. These criminals are judged by international tribunals, such as the International Criminal Court (ICC), which seeks to hold accountable those who bear the greatest responsibility for atrocities. The classification emphasizes the severity of their actions and the need for justice on a global scale, aiming to deter future violations and promote accountability in international relations.