One update from September 28 warned, based on multiple streams of intelligence, that the terror group Hamas was poised to escalate rocket-attacks across the border. An October 5 wire from the CIA warned generally of the increasing possibility of violence by Hamas. Intelligence assessments are written by the intelligence community to inform policy makers and enable them to make decisions. For example, Israeli officials failed to recognize routine Hamas training exercises as a sign that the group was preparing an imminent attack. It’s also possible that the Hamas operation was more successful than the group anticipated, one former intelligence official and another source familiar with current intelligence said.

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