@tsarstepan,
Oh, I know and agree with the 'clues', but just saying the article isn't so much about fact as it is full of speculation. Even the one expert they reference by name, Dr. Cohen, denies he has any 'specific knowledge' that it was Israel, and then the other references are all 'anonymous experts' or 'unnamed sources', etc.
It'll probably be years before we find out for sure. I don't see Israel admitting to it any time soon. Or us, either.