After last year's disastrous invasion of Lebanon, Israel says it will not be dragged into a land-invasion of Gaza, but it did strike three times from the air today after Hamas fired rockets into the Israeli city of Sderot. Hamas warns that suicide bombs may be next. Meantime, deadly shoot-outs between Hamas and Fatah have left more than 40 people dead and the two Palestinian factions have all but destroyed their "unity government." Can Israel stay out of what may become civil war? What about US assistance to Fatah and its regional efforts at peace?