As I’ve noted before, in the eyes of its defenders the blockade of the Gaza Strip is a security measure aimed at denying rockets to Hamas, while in fact it’s a comprehensive effort to collectively punish Gaza residents—a majority of whom are children—in hopes that this will somehow lead to Hamas being replaced by a more moderate regime. Yousef Munayyer’s rundown of the consequences of the blockade makes the point clearly. For example, “In 2006, Israel carried out an attack on Gaza’s only power plant and never permitted the rebuilding to its pre-attack capacity (down to producing 80 megawatts maximum from 140 megawatts).”
I suppose one could try to construct a defense of what the policy actually is, but instead most people seem to prefer to defend something else. Of course Israelis don’t want to be hit by rockets, but why shouldn’t Gaza’s civilians have electricity?