1) Any previous Secretary of Defense would take full responsibility rather than try to deflect his own role.
2) Rules of Engagement and commitment to spare the lives of “enemies” or “suspects” who no longer pose a threat to US personnel are longstanding rules and tenets that are meant to protect US soldiers, sailors, and pilots who might be captured or left defenseless.
That is, we want our personnel to be afforded the same protections we afford to the enemy. Rules of engagement and the code of conduct in warfare are never to be ignored or treated in a cavalier manner.