Crimes against humanity are defined in the Rome Statute as serious violations of international humanitarian law committed against civilians during armed conflict, systematic or widespread attacks against a civilian population, and acts of genocide, torture, or sexual violence committed against a particular group of people.

Crimes against humanity and war crimes are both serious violations of international law, but they are distinct crimes. Crimes against humanity are committed against civilians during armed conflict, while war crimes are committed against combatants and civilians during armed conflict. Both crimes can be committed during peacetime or wartime.

Crimes against humanity include genocide, torture, sexual violence, enforced disappearances, and other serious violations of international humanitarian law committed against civilians during armed conflict.

Both individuals and states can be held responsible for crimes against humanity. Individuals who commit, order, or incite crimes against humanity can be held criminally responsible. States can also be held responsible for crimes against humanity committed by their officials or agents.

The International Criminal Court (ICC) is a permanent international court that investigates and prosecutes individuals accused of crimes against humanity, war crimes, and genocide.

The principle of complementarity is the principle that the ICC can only investigate and prosecute cases if the national courts are unwilling or unable to do so. This principle is designed to ensure that the ICC does not interfere with the domestic justice systems of states.

Prosecuting crimes against humanity is a complex and challenging task. Some of the challenges include the difficulty of gathering evidence in conflict zones, the unwillingness of states to cooperate with the ICC, and the lack of political will to prosecute crimes against humanity.

Prosecuting crimes against humanity is important for a number of reasons. It helps to deter future crimes against humanity, it helps to bring justice to the victims of crimes against humanity, and it helps to promote accountability for crimes against humanity.

Preventing crimes against humanity is a complex and challenging task, but there are a number of things that can be done. These include promoting human rights and the rule of law, addressing the root causes of conflict, and strengthening international cooperation to prevent and punish crimes against humanity.

The United Nations has a mandate to prevent and prosecute crimes against humanity. The UN Security Council can authorize the use of force to prevent or stop crimes against humanity, and the UN General Assembly can establish international criminal tribunals to prosecute individuals accused of crimes against humanity.

The Rome Statute of the International Criminal Court is a treaty that establishes the International Criminal Court, defines crimes against humanity, and sets out the procedures for prosecuting crimes against humanity.

The crime of genocide is defined as the intent to destroy, in whole or in part, a national, ethnical, racial or religious group, by killing members of the group, causing serious bodily or mental harm to members of the group, deliberately inflicting conditions of life calculated to bring about the physical destruction of the group in whole or in part, or imposing measures intended to prevent births within the group.

The crime of torture is defined as the intentional infliction of severe pain or suffering, whether physical or mental, upon a person in the custody or under the control of the accused, the threat of imminent death, serious bodily harm, or sexual violence, or the use of force or coercion to obtain a confession or information.

The crime of sexual violence is defined as rape, sexual slavery, enforced prostitution, forced pregnancy, or any other form of sexual violence of comparable gravity.

The crime of enforced disappearance is defined as the arrest, detention or abduction of a person by, or with the authorization, support or acquiescence of, a State or a political organization, followed by a refusal to acknowledge the deprivation of liberty or by concealment of the fate or whereabouts of the disappeared person.