@Render
I suspect the Egyptians are having a few meetings to discuss this incident. A repeat should elicit an interesting response.
@Render
Machine Vision should be pretty easy to implement given Google Earth data.
I suspect the next assassination attempt will unpack that methodology.
(Interesting times....)
@jurban
Sudan is in a civil war. Radar either non-functional or very limited.
Eritrean radar looks southwards, towards Ethipoia (cuz wars).
IDF ground based radar looks in a U shape running roughly from the Lebanon border, through Syria and Jordan, to the Sinai.
Egyptian defense radar just isn't that good (obviously). Or the Egyptians ignored it.
Most civilian radars would have seen the drone as a small flock of birds.