The UN calls the Myanmar army's aggression against the Rohingya “ethnic cleansing”. “Ethnic cleansing” is a term invented by Slobodan Milosevic. It's a euphemism for forced displacement and genocide. It's an insidious term because there is no international treaty law against it, whereas there are international laws against forced displacement and genocide.
“Ethnic cleansing” is not a crime under the Rome Statute of the International Criminal Court. It has no legal meaning in international law. Another term without legal meaning is “atrocities”.Many people think “genocide” requires millions of deaths. Thousands aren't enough. But the Genocide Convention outlaws intentional destruction “in part” of ethnic or religious groups.Genocide is not a sacred or magic word. But when the word “genocide” is used, force to stop it becomes possible. Weaker words like ethnic cleansing, crimes against humanity, or atrocities mean that no force will be used to stop the massacres.