Mead's theory of war, peace, and society emerged out of the historical events of his time, particularly World War I. During this period he went from being a pacifist, along with his contemporaries John Dewey and Jane Addams, to being a strong advocate for war. From 1917-1918 Mead became a leader in voicing the need for war based on his theory of self and society. After the war, he became disillusioned with President Woodrow Wilson, with Americans' failure to support mechanisms for international arbitration, and with the political reasons for American participation in World War I. He returned to a more pacifist and co-operative model of behavior during the 1920s, when he became less political, more abstract, and more withdrawn from public debate. The book includes Deegan's interpretation of Mead's early social thought, his friendship and family networks, the historical context of America at war, and the importance of analysis of violence and the state from Mead's perspective. She also provides illustrative selections from Mead's work, much of which was previously unpublished.