i dont know what hte context of 9/11 is besides that american imperialism was allied with bin laden when they were fighting the russians. i know the american govt wants the ukrainian war to last a long time, ukrainians be damned, so if that was true for bin laden fighting hte russians and bin laden knew that, you could see how he could be upset.
in the case of oct 7th, under intl law the hamas guys have a right to strike certain targets in israel because gaza is under israeli occupation. they do not have a right to strike civilians.