In Israel, though, the mood is more than merely wary. “Mr. Netanyahu’s intelligence chiefs . . . are up in arms,” a prominent Israeli journalist insisted in The New York Times. In recent interviews with Israeli intelligence sources the frequently used operative verb was “whiten”—as in “certain units from now on will whiten their reports before passing them on to agencies in America.”

What further exacerbates Israel’s concerns—“keeps me up at night” was how a government spymaster put it—is that if Trump is handing over Israel’s secrets to the Russians, then he just might as well be delivering them to Iran, Russia’s current regional ally. And it is an expansionist Iran, one Israeli after another was determined to point out in the course of discussions, that is arming Hez­bol­lah with sophisticated rockets and weaponry while at the same time becoming an increasingly visible economic and military presence in Syria.

“Trump betrayed us,” said a senior Israeli military official bluntly, his voice stern with reproach. “And if we can’t trust him, then we’re going to have to do what is necessary on our own if our back is up against the wall with Iran.” Yet while appalled governments are now forced to rethink their tactics in future dealings with a wayward president, there is also the dismaying possibility that a more tangible, and more lethal, consequence has already occurred. “The Russians will undoubtedly try to figure out the source or the method of this information to make sure that it is not also collecting on their activities in Syria—and in trying to do that they could well disrupt the source,” said Michael Morell.

What, then, was the fate of Israel’s agent in Syria? Was the operative exfiltrated to safety? Has he gone to ground in enemy territory? Or was he hunted down and killed? One former Mossad officer with knowledge of the operation and its aftermath will not say. Except to add pointedly, “Whatever happened to him, it’s a hell of price to pay for a president’s mistake.”