He wrote that the justifications for Israel’s war in Gaza became “difficult to defend” and that “whatever the justification you’re either advancing a policy that enables the mass starvation of children, or you’re not.” The post received an outpouring of support with hundreds of likes and comments in just a few hours. …

In his letter, Mann also says that he’s the descendant of European Jews and “was raised in a particularly unforgiving moral environment.”

“When it came to the topic of bearing responsibility for ethnic cleansing — my grandfather refused to ever purchase products manufactured in Germany — where the paramount importance of ‘never again’ and the inadequacy of ‘just following orders’ were oft repeated. I’m haunted by the knowledge that I failed those principles,” Mann wrote.

Mann went on to say that he held off sharing the reason for his resignation because he was afraid of violating professional norms and disappointing officers that he respects.