An accessible guide to the principles and vision of Dag Hammarskj ld, a man John F. Kennedy called "the greatest statesman of our century." Dag Hammarskj ld served as Secretary-General of the United Nations from 1953 until his tragic Dag Hammarskj ld served as secretary-general of the United Nations from 1953 until his tragic death in a suspicious plane crash in 1961. During those years he saw the fledgling international organization...