The J-Post on why another summer war is unlikely: 

Olmert and Peretz do not want a large-scale operation in Gaza. Any response to the continued Kassam attacks will be an effort to slightly impair Hamas's ability to perpetrate attacks, as well as demonstrate to the public that there is a government after Winograd and that it is doing something.

The pinpoint operations approved during the security assessment at Olmert's office Wednesday afternoon will not succeed in stopping the Kassam rockets. At the most, Israel can hope they will make it more difficult for terrorists to reach their launch pads in northern Gaza.