I was in Egypt a while and there's no talk of them invading Sudan or Ethiopia. A lot of Egypt's economy is overseas aid from the US and similar.

The main military thing going on there - I was in Dahab where there are endless military checkpoints - is Hamas like guys trying to come over and overthrow the fairly moderate Egyptian government and replace it with a hardline Hamas type islamic dictatorship for the glorification of Allah etc. Again it's not about reducing scarcity - more about increasing scarcity in return for political control. Dahab and Cairo are both a few hours drive from Gaza.