You hand-wave the reasoning of war crimes, yet never provide an explanation. Why are they war crimes? Tear gas is an abortifacient, can be lethal, and can cause

You hand-wave the reasoning of war crimes, yet never provide an explanation. Why are they war crimes? Tear gas is an abortifacient, can be lethal, and can cause fires. What is your definition of "dastardly effect"? Source: https://www.pri.org/stories/2019-07-31/tear-gas-has-been-banned-warfare-why-do-police-still-use-it https://www.pri.org/stories/2019-07-31/tear-gas-has-been-ban...