Civilians are being killed in Ukraine. So, why is investigating war crimes so difficult?
- Written by Ben Saul, Professor of International Law, Sydney Centre for International Law, University of Sydney

The prosecutor of the International Criminal Court, Karim Khan, is opening an investigation into whether war crimes may have been committed in Ukraine. He is urgently seeking to preserve evidence as the fighting rages on.
War crimes are serious violations of international humanitarian law, which seeks to regulate the conduct...
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