Fifteen years ago, back in 1991, I speculated about how to bring peace to the West Bank and to Gaza. Holding on to it wasn't bringing "peace"... and pulling out would not bring an end to the violence (we eventually proved that by withdrawing from Gaza).
The cartoon deals with the fact that we often think of our real-world problems as if they were like mathematical problems. They are not. Sometimes real-world problems just don't have solutions.Saying that sounds awfully cold, so in the cartoon I said it with a joke.