https://www.timesofisrael.com/egypt-intelligence-official-says-israel-ignored-repeated-warnings-of-something-big/
The Egyptian official said Egypt, which often serves as a mediator between Israel and Hamas, had spoken repeatedly with the Israelis about something big, without elaborating.
He said Israeli officials were focused on the West Bank and played down the threat from Gaza. Prime Minister Benjamin Netanyahus government is made up of supporters of West Bank settlers who have demanded a security crackdown there in the face of a rising tide of violence over the last 18 months.
We have warned them an explosion of the situation is coming, and very soon, and it would be big. But they underestimated such warnings, the official, who spoke on condition of anonymity because he wasnt authorized to discuss the content of sensitive intelligence discussions with the media, told The Associated Press.
In one of the said warnings, Egypts Intelligence Minister General Abbas Kamel personally called Netanyahu only 10 days before the massive attack that Gazans were likely to do something unusual, a terrible operation, according to the Ynet news site.