I didn't raise the question: the poster to whom I replied did, when he asserted that "incalculable harm" was done.
When you get a security clearance you swear not to disclose the secured information to unauthorized persons. The Israeli agents he gave the info to were not authorized and he was not in a position to freelance the decision.
Granted. Others have been convicted of passing information to allies before. None of them got life sentences; in fact half of them were sentenced to less than 4 years.
1. What kind of information did those "others" provide to our allies?
2. Israel is not an "ally" of the United States in any formal (i.e., legal) sense of the word.