[partialrecall]

Given past performance, I don't think there is any rational reason to believe that Israel risks America severing ties with it over incidents of espionage.

In any event, Israel has a nuclear deterrent, even if they like to coyly lie about it. In the fantasy scenario where America no longer supports Israel, they'd manage just fine on their own. But again, that's not going to happen. Too many Americans think it a matter of religious imperative that they and their politicians continue to support Israel, no matter what.