sane time sane place

Israel has repeatedly bemoaned the loss of innocent lives as a result of their current military conflict with Hezbollah. They have justified their actions by stating that the Hezbollah militants set up in civilian areas to fire their rockets at Israel. Israel correctly claims that the Lebanese civilians are being used as human shields. There are some problems with this explanation. Israel admits that the Hezbollah militants immediately relocate after firing their salvos of Katyusha rockets. If that is the case, then what is the rationale for bombing the civilians in the areas where the rockets were fired? The Hezbollah fighters would have already left the area. Considering that more children have been killed than combatants, perhaps the Israelis should reconsider their tactics.