GAZA CITY, Gaza Strip - Once feared for its deadly suicide attacks in Israel, the Islamic militant group Hamas these days is but a shadow on Palestinian streets it once ruled with Kalashnikovs and the Quran. Its key leaders are dead, slain by Israeli missiles. Its fighters are on the run from Israeli armor and infantry. Once capable of devastating attacks, it's been reduced to lobbing crude, homemade rockets at Jewish towns and settlements around the Gaza Strip. But Hamas is likely to regenerate, because the underlying reasons for its popularity haven't changed. The absence of peace negotiations and a...