Which would be to....?
What do you think, horsey? If they wanted to be gentle, they could round up every member of plo, hamas, whatever and just put them down where they're caught. That might make for just a few thousand dead and would be a very mild reaction. On the other end of the scane, just a few hours work with cluster bombs, faes and other tools should clean the area.
If you have a problem with that, you have my solemn invitation to drag yourself to the west bank and please stand in the line of fire. Clear?