Does AP mentions the term war crime or ethnic cleansing?

Asking for a friend

1. The rule they’re likely breaking: https://ihl-databases.icrc.org/en/customary-ihl/v1/rule25#title-5

2. The repercussions: https://www.icrc.org/sites/default/files/external/doc/en/assets/files/other/penal_repression.pdf

The Conventions and Protocol make clear that grave breaches must be punished. However they do not themselves set out specific penalties nor do they create a tribunal to try offenders. Instead they expressly require States to enact criminal legislation to punish those responsible for grave breaches.