There is a new threat to Israel, although the people raising it are entirely innocent. The threat is represented by a growing population of African refugees, mainly escapees from the hellish dictatorships of Eritrea and Sudan, who are pouring over the Egyptian border into Israel and settling in some of the country’s poorer neighborhoods, especially in Tel Aviv. They’re now coming at the rate of more than 1,000 each month, according to recent government statements. In summer 2006, when the presence of these new immigrants first gained public notice, the State Attorney’s office numbered them at fewer than 200. Then, they were strictly a humanitarian concern. And this continues to be so: The people from Darfur and Southern Sudan have fled annihilation; those from Eritrea fled war, lifetime military conscription and persecution. A substantial proportion of refugees from both places were tortured along the way, many of the women have been gang raped by their Sinai Bedouin guides, and all the refugees dodged brutal imprisonment or death at the hands of Egyptian border guards.