What is Israel's endgame in Gaza?

CNN) -- A river of blood runs through Gaza, as homes are smashed to rubble and hospital emergency rooms overflow. The volley of Hamas rockets into Israel continues, even when met with the preeminent firepower of the Israeli military's bombs, missiles and shells. The legions of dead are swelling by the hundreds. It's horrifying. But the world has seen it all before -- twice. Operation Protective Edge looks much like its forerunners in 2008 and 2012.Continue Story...