Israel was attacked on a scale he had not experienced in many years, and it was by a non-state actor, whom he considered dangerous, but simultaneously isolated and in a sense controlled. However, it is not easy to explain full and in a holistic way, neither the reasons for surprise nor the uniform answer to questions about future developments. However, we can be tempted to identify respective diagnoses against possible assessments of Hamas terrorists in the first phase of their attack. As well as effort a brief diagnosis of the causes of Israel’s failure.