This is all the Gaza offensive was intended or expected to accomplish anyway:

For the moment, however, the offensive in Gaza is proving popular with Israelis, and Livni and Barak are reaping the benefits. Recent polls show them closing the gap with Likud party leader Netanyahu, who had opened up a wide lead based on his promise to take a hard line against Israel’s main adversaries — Hamas, Hezbollah, Syria and Iran.

I wonder how many deaths each percentage point has cost?  Call it the "Bush" metric of deaths/approval percent.