Being at war is one thing … but attacking civilians, committing rapes, and bombing hospitals are just unacceptable.

Patrick Keenan, a professor at the University of Illinois College of Law, is an expert in international criminal law and says Russia is already under investigation for possible war crimes.

“There have been a number of credible reports of terrible sexual violence on a pretty wide scale against Ukranian women and girls,” said Keenan.

To the uninitiated, it almost sounds like Catch-22 or Dr. Strangelove (“You can’t fight in here! This is the war room!”). Where does an act of war end and a war crime begin?

“It’s not illegal under every circumstance to kill civilians during times of armed conflict,” Keenan said. “Intentionally targeting civilians – that’s a violation!”