In August 2017, the Myanmar military initiated what the United Nations Commissioner for Human Rights called a text-book example of ethnic cleansing of the Rohingya ethnic minority. In 2020, Myanmar is called to the International Court of Justice to answer to allegations of committed genocide. As the UN has failed to invoke the responsibility to protect, the world has turned to regional organizations as a prevention mechanism in mass atrocity prevention. The research objective of this study is to examine how Myanmar’s regional organization ASEAN has responded to the oppression of the Rohingya minority, as to explain why the atrocities targeting the Rohingya in Myanmar could not be prevented regionally and add to the research on mass atrocity...