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John Maynard Keynes, the great economist, once said in a debate: "When the facts change I change my mind, what do you do, sir?"

Well, like it or not, the facts are changing. From the Sinai in Egypt, a country that has a signed peace treaty with Israel, terrorists are entering Israel and killing Israelis. And the Egyptian government, the military junta that has replaced Hosni Mubarak's dictatorship, is unwilling or incapable of assuring peace on the Israeli-Egyptian border. There may be more acts of terror emanating from Sinai to follow.