Could we be looking at the first major war involving Israel in four decades? Egypt's new Muslim Brotherhood-led government is backing their Hamas brethren, even sending their PM over to Gaza to give moral support while Hamas exchanges rocket-powered pleasantries with Israel.
Egypt and Israel have come to blows four times, most recently in 1973. After that, a rapprochement created an uneasy peace that saw Israel give the Sinai back to Egypt after grabbing it in 1967 as a buffer. Expect Jimmy Carter, who brokered the Camp David accords that codified that rapprochement, to be back in the news, likely bashing the Likudniks for breaching the spirit of Camp David.
I'm not sure if the Egypian government, having just gotten into power and still working to keep the Mubarak leftovers in check, is up to picking a fight with Israel. Camp David is part of the legacy of the Sadat-Mubarak team, but one that helped Egypt become allied with the US and a bit more prosperous than it otherwise would have been. Officers might well be inclined to drag their feet and not want to go back to the four-wars-in-a-quarter-century that crippled the Egyptian military.
It's Friday morning; where are the Islamic rabble going to be roused today? Somehow, I expect something American to be trashed over the current unpleasentness in Gaza, since their isn't anything Israeli to be trashed in most Arab countries other than a Israeli flag to be burned in effigy. Friday is always a prime day for that, since it's go-to-mosque day and a good Jew-bashing sermon will get the rabble roused.