I have always held the Bush administration responsible for missing the coming 911 attacks.
As for FDR, isn't there a reasonable school of thought claiming that FDR knew of the attack, but let it go forward to change public opinion about entering the war? Are you suggesting this is what Bibi did?
Anything is possible. We don’t know enough. But I doubt it. I think Mossad knew that Hamas was going to do something but they probably underestimated the capabilities of Hamas tonpull off something like this.