'There is among progressives and liberals a tendency to blame both Israel and Hamas in equal measure for the violence. This is a false equivalence.' There was widespread dismay when people learned of the Hamas offensive in Israel two weeks ago. I felt, after talking to people, that perhaps the best way for them to understand what happened is to ask themselves, as I had asked myself years back, a question. This is a question that I am now popping to you and other readers of this commentary. But before I do that, let me give you some background for...