Sammy is somewhat correct in saying, "There's a very strong interest for having stability in Egypt, mostly unrelated to Israeli interests specifically (Suez Canal would be one example, their influence in the Arab league is another). No one wants to see Egypt falling into the hands of the Muslim brotherhood, other than perhaps you."
And in turn, Egypt has been bribed by the USA and is largely the only Arab Nation that got any land returned, even if it was the worthless can't grow a weed Sinai desert.
But what Sammy talks about is what we got in those those heady days of the Oslo accords where some semblance of optimism remained. Even though both Rabin and Sadat were rather rapidly assassinated by their own countrymen..
Fast forward nearly 2 decades nearly two decades, and that Egyptian conversion has bought nothing. Mubarack, as Egyptian leader, is living on borrowed time, already Egypt is relaxing its embargo of Gaza in response to worldwide pressure against Israel, Turkey is expressing open hostility to Israeli actions when it was formally an Israeli ally, while the Mid-east remains a powder keg. At the same time Israel is increasingly being viewed, world wide, as the biggest Mid-east loose canon. Meanwhile Iraqi stability may be miles wide and less than an half inch deep while the house of Faud is far less stable than it looks.
All that adds up to a situation where its likely that the time is ripe for a new Nassar able to unite all the mid-east States. That new Nassar need not come from Egypt, but as US influence in the mid-east really drops because of the failures of this latest round of peace talks, Israel may be the nation to be most amazed as the new mid-east order changes into a far more hostile to Israel reality.
As the gains to mid-east stability purchased with the lives of Sadat and Rabin are written off as failed experiments.