AnnieB, I don't think Netanyahu 'allowed' Hamas to commit the Atrocity (and I could be proven wrong after an international trial, when all the facts are assembled),
but
It was always my belief that Mossad was the world's most effective intelligence agency, evidence of this is the accuracy of their most recent strikes on the Iranian leaders, and so I feel there is a dissonance between that belief, and the fact that Hamas was able to pull off such an horrendously successful outrage.
Then reports emerged that there had been warnings given. Listed was the communications from female border guards about the suspicious and continuing amount of activity at the fence, in the days, yes days, before the assault.
More recent accounts say that the Hamas fighters were expecting to die, and were amazed at the lack of 'resistence'.
This begs the question, what went wrong with the intelligence feed? And why?
Then, very recently, and thanks to GN posters I learned that Netanyahu found himself able to give money to Hamas in the past.
A lot of dissonance, among the horror.