Modern Egypt now has the most powerful armed forces of all the Arab states, thanks to American military aid; but it remains contained by deserts, the sea, and its peace treaty with Israel. It will remain in the news as it struggles to cope with feeding 84 million people a day while battling an Islamist insurgency, especially in the Sinai, and guarding the Suez Canal, through which passes 8 percent of the world’s entire trade every day.