From northfieldnews.com. Here's an excerpt:
Q: What’s the book about?
A: Whether you’re the secularist or deeply Christian, we are all wrestling with moral perplexity every day of our lives and Niebuhr is the best guide for that. In addition he applied his thinking to not just individuals but to groups, including nations and more specifically including our own and our pretensions and illusions. He’s worth reading.
Q: Why write this book?
A: I had the time, about three years, the interest and the background and the book is an effort to link the Niebuhr scholars and the ordinary readers of serious books. A lot of people know the name if they read “The Atlantic,” or the “New York Times” and they may know his name, but maybe they have just heard of one or two quotes.
Q: What does the book mean to you?
A: It’s a very personal book and it’s my take on who he was and why his interest in theology and politics flow from the same moral vision. Niebuhr is fundamentally a kind of reality check because his Christian vision is linked with everyday life. In the book, he tries to speak to deeply religious minds and secular minds.
It's a brief article, but if you want to know more about Crouter and the writing of the book, it's worth a read.