To the Terrorist, by definition, that innocent civilians and even children are killed isn't a regrettable cost of taking military action. It's not a cost at all. It's a benefit. It has strategic value. [Michael] Goldfarb explicitly says this: "to wipe out a man's entire family, it's hard to imagine that doesn't give his colleagues at least a moment's pause."-- from Orwell, blinding tribalism, selective Terrorism, and Israel/Gaza by Glen Greenwald, who also notes that the Israeli government continues to defy the country's supreme court which said that journalists must be allowed in to the Gaza strip.
The Israeli government is following the lesson of U.S. President Andrew Jackson here: you can get away with it.
Elsewhere, Chandran Kukathas explores the many ways in which the term genocide is used and understood.