-—”Medium-large nuke, dropped into the water about a mile behind the Aswan High Dam. “
Ummm... Sharpshooter, I admire your eagerness to slam Islam for the evil that it is, but that’s kinda reckless, doncha think?
Where does the Nile flow?
The Mediterranean and then the Atlantic would have radioactivity. That would piss off the Euros (who cares), but they don’t deserve this.
Neutron bombs would be better.
Well, consider for a second, what fallout is. Debris pulled up in the explosion, and the bomb itself, and stuff in the immediate vicinity of the explosion, made radioactive by the high neutron and gamma flux.
A “water shot” would primarily irradiate water, transmuting the hydrogen and oxygen into radioisotopes.
The radioisotopes of Oxygen have half-lives between 2 and 122 seconds, so they would be violently radioactive immediately, but by the time the water made it out to the sea, it would barely be radioactive at all: 20 minutes would be 10 half-lives of the longest-lived isotope, or roughly one tenth of a percent of the original radiation.
Hydrogen would be transmuted to Tritium, which is a Beta emitter, and thus not really a problem. . .