TangoJager t1_j95jgx8 wrote

Legally, it's genocide, not a war crime.

War crimes are violations of the rules of armed conflict, while genocides are attacks upon a group of people through violence (killing, child abducting) or biological means (birth control, etc) with the specific intent to eradicate said group.

The two concepts must be distinguished or else peacetime genocides could not be prosecuted. They usually still incur the same penalty.