What was the secret info? What were the terms of the deal? If leaking the deal scuttled it, then it probably wasn’t a good deal to begin with. I’d say Hamas was looking for any excuse to walk away from it and Netanyahu gave them one, showing Kerry how foolish he was.
Frankly, m’dear, I don’t give a damn what the secret was. It was during the Kerry/Obama era of fonda-mental-lie bad foreign policy, so what ever it was, it’s a good thing it got scuttled.