without really saying "bomb the pyramids"
lets check some facts
q:what would happen if israel would bomb the pyramids in yom kippur war or 6 days war:
a: Egypt would have lost alot of funds which flows in to their government treasure (which spends 73% of its income to buy weapons) on yearly basis .
q: what could be considered negative for taking such action ?
a: well firstly , you should focus on destroying the enemy , rather then its unmanned buildings . which we did
secondly , if we would have destroyed archaeological sites in Egypt and Sinai ,in retro perspective look - a lot of archaeological proofs of the tanakh , which have been found , would probably be destroyed
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About who build the pyramids . many of them were built through different ages, the original designer is imhotep (which feats perfectly to the story of yosef btw , as well , his worship by the Egyptians , though he was not a king (or so we think , some archaeologists believe king yusfis (naar mar ) is actually yosef , and his successor menes , is menashe) was mainly done through image of a bull , which haza"l mentions as well - this particular Egyptian worship - is how they worship the tribe yosef)
there are infact , in papyrus harris ,names of slaves labored by Egypt , of whom , some very hebraic names , like shifra , and menahem (!!)