“Egypt’s air force can handle border conflicts, but hitting the Grand Ethiopian Renaissance Dam (GERD) is a long-range operation.”
-— Some F-16’s ought to do the trick.
OTOH attacking someone else’s dam could give them the idea of attacking your dam. And Egypt has a really big one upstream of Cairo.And if you attack a dam upstream from your own infrastructure, you would produce a sudden rush of water headed you your own country.
Ethiopia could leak the intelligence that if their dam suddenly ruptures, a serious tonnage of ANFO will be carried downstream in the flood. That might focus some minds in Egypt . . .