Why won't Obama apologize for a war crime?

https://socialistworker.org/2016/05/27/why-wont-obama-apologize-for-a-war-crime

http://www.wsws.org/en/articles/2016/05/27/hiro-m27.html

http://www.wsws.org/en/articles/2016/05/20/kwam-m20.html

https://www.wsws.org/en/articles/2016/05/07/flin-m07.html