War Crimes vs Genocide vs Crimes Against Humanity: The Difference

These three categories are the gravest crimes in international law, and they overlap — but they are defined by different elements. Genocide requires intent to destroy a protected group; crimes against humanity require a widespread or systematic attack on civilians; war crimes require an armed conflict.

Genocide

Defined by the 1948 Genocide Convention and Article 6 of the Rome Statute, genocide means acts committed with the intent to destroy, in whole or in part, a national, ethnical, racial or religious group. The defining element is that special intent (dolus specialis) — the hardest part to prove.

Crimes against humanity

These are certain acts — murder, extermination, deportation, torture, persecution and others — when committed as part of a widespread or systematic attack directed against any civilian population. No armed conflict is required, and no intent to destroy a group is needed.

War crimes

War crimes are serious violations of the laws of armed conflict (international humanitarian law), such as targeting civilians, torture, or attacking protected sites. They require the existence of an armed conflict. A single act can qualify.

Frequently asked questions

Can the same act be more than one of these crimes?

Yes. A single massacre can simultaneously be a war crime, a crime against humanity and — if the special intent exists — genocide. Prosecutors often charge in the alternative.

What makes genocide the hardest to prove?

The requirement of specific intent to destroy a protected group as such. Killing many people is not enough on its own — prosecutors must show that destroying the group was the goal.

Primary sources

• Rome Statute of the ICC (Articles 6–8)
• UN — Genocide Convention (1948)
• ICC — Crimes under the Court’s jurisdiction

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