 Commitment for a complete end to the war, but all sides warn a deal's still not guaranteed. The officials say Hamas wants written guarantees from mediators that Israel will continue to negotiate a permanent ceasefire deal once the first phase goes into effect. I'm Charles de la Desma. Meanwhile, former Israeli ambassador to the U.S., Dr. Michael Oren, says if Hezbollah succeeds in striking a major target in Israel, it could trigger a regional war, one that could force U.S. intervention.