"But those who have an axe to grind will still insist "The Israelis did it", "
The have done it before - they've admitted it (at least, their Security heads have), their mates across the pond covered up for them because they know they did it, and if it has happened again it was probably them wot dun it - leopards and spots and all that.
And last but not least of all - each time they are suspected of it, out troops their little band of trolls protesting that they didn't do it, even before it's been established whether it's been done.
Jim Carroll