 United States President Harry Truman, who oversaw the founding of the United Nations after the Second World War, kept these lines from Tennyson’s poem in his wallet (Kennedy 2006: xi). After this brutal global war that claimed over fifty million lives, just like after the previous world war in which almost ten million perished, ordinary people and statespersons alike sought to establish a post-war international order that would be able to prevent another war of global devastation from occurring. In fact, since the problem of war, or large-scale socially organized violence, has been with us throughout human history, the ideal of a universal community of humankind living in perpetual peace was not at all new.