If Egypt should attack Israel, a few bombs on the Aswan dams & a sunken ship in the Suez canal will effectively return Egypt to the stone age for decades.
No need to sink the ships-—breaching the Aswan would return Egypt to pre-Noah, before-the-first-flood days. And those Egyptian dunderheads ought to realize how tenuous and vulnerable they really are and be a little polite/humble/responsive all around. A major part of the Aswan is dirt/rock fill and is extremely vulnerable to bunkerbuster types of shocks. Hitting that dam would get Nefertiti’s genes pretty much out of the human pool.
Not that easy to breach an earthen dam...
See the film "Dam-busters"h to see how it was done to the two dams at the head of the Ruhr Valley in WWII