Countless protest signs have informed us over the years that “war is not the answer.” We hear this message, with varying levels of sophistication and differing underlying worldviews, from institutions and people ranging from Code Pink to Pope Leo .  “War does not solve problems,” the pontiff said in an Angelus address last year. “On the contrary, it amplifies them and causes deep wounds in the history of peoples — wounds that take generations to heal.” Now, there are many things that can be