The ground war in Gaza is a very risky move for Israel.
Unless Hamas can actually be destroyed on the ground and unless there is intelligence that can allow them to find them I can’t see how a sustained ground war will help.
One might go in and destroy the tunnels and the infrastructure of terror to make things complicated for Hamas and then pull out but I can’t see anything sustained. If the incursion is too brief however then it has the potential to turn into the 7 days when McClellan won 6 of seven battles but treated them as defeats or Tet which was a military disaster for North Vietnam but was portrayed as a defeat for the US.
The wild card here is Fatah. If they are actually giving underground support to Israel in this offensive then Hamas is in trouble. Of course it is not unlikely that if or when Hamas is neutralized Fatah will go back to their normal support of their own terror objectives but we will see.
The north is still the wild card. If we see strikes from Lebanon, and I’m very surprised we haven’t already the whole game will change in a hurry.
Da Techguy's (no longer backup) Blog 
[…] subject of the Gaza operation came up. All agreed that Hamas are a bunch of bastards. My hesitation on the ground offensive wasn’t shared by anyone but 60% of the table criticized Israel for […]