The 9/11 terrorist attack in the USA in 2001 and the subsequent ill-fated "War on Terror" waged by the USA have troubled and bedeviled US politics and foreign policies for over 20 years. But, has the USA learned valuable lessons from all this? Is Israel responding to its 9/11, the October 7, 2023 terrorist attacks by Hamas (10/7), in the same way as USA's vengeful and unrestrained response to 9/11 - with overwhelming military force, terrible devastation, indiscriminate killing, and uncontrollable vengeance? What are the consequences of all this? What are the prospects for peace?