Israeli officials are reportedly growing concerned over the long-term viability of the current Egyptian regime in light of gains made by Islamists in their insurgency.
Bloomberg News quoted a former Republican lawmaker on Friday as saying that Israeli government figures are beginning to wonder whether Egypt's president, Abdel Fattah al-Sisi, can successfully overcome the threats posed to his rule by Islamic State-inspired Salafist gunmen.
Egypt's tourism industry - a key source of revenue for the cash-strapped Arab giant - is expected to take an even bigger hit in the wake of Saturday's crash of a Russian airline in the Sinai Peninsula.
All 224 passengers on board were killed in what Western intelligence agencies say may have been a terrorist bomb.
"We encountered a lot of people in Israel and elsewhere that don't think that he is going to survive his term," Vin Weber, a former Republican member of Congress, told Bloomberg.