Given the demographics of Jewish people outside of Israel, it's hard to disagree with. When you consider the early years of Israel, and how many wars were started to run the Jews out of it, it's even more well-supported.
The best hope for a lasting peace was with the Oslo accords. They were torpedoed by the Palestinians themselves, who were unwilling to accept any kind of compromise that maintained a Jewish state.
Not saying Israel is innocent, but the idea that so many people seem to have that the region would be happy-go-lucky and peaceful for Jewish people if not for the war is hopelessly naive.
