Westminster John Knox Press, as part of its Library of Christian Ethics series, has recently reissued two of Niebuhr's best known works.
The first is Moral Man and Immoral Society, with a foreward by Cornel West. Here is the description:
Arguably his most famous book, Moral Man and Immoral Society is Reinhold Niebuhr's important early study (1932) in ethics and politics. Widely read and continually relevant, this book marked Niebuhr's decisive break from progressive religion and politics toward a more deeply tragic view of human nature and history. Forthright and realistic, Moral Man and Immoral Society argues that individual morality is intrinsically incompatible with collective life, thus making social and political conflict inevitable. Niebuhr further discusses our inability to imagine the realities of collective power; the brutal behavior of human collectives of every sort; and, ultimately, how individual morality can mitigate the persistence of social immorality.
This new edition includes a foreword by Cornel West that explores the continued interest in Niebuhr's thought and its contemporary relevance.
The second is An Interpretation of Christian Ethics, with a new introduction by Edmund Santurri. The publisher's description reads:
This addition to Westminster John Knox Press's Library of Theological Ethics series brings one of Reinhold Niebuhr's classic works back into print. This 1935 book answered some of the theological questions raised by Moral Man and Immoral Society (1932) and articulated for the first time Niebuhr's theological position on many issues. The introduction by ethicist Edmund N. Santurri sets the work into historical and theological context and also assesses the viability of some of Niebuhr's positions for theology and ethics today.