Will Inboden has a nice blog entry over at Shadow Government on Reinhold Niebuhr, the American Realist, a summary of the points he made at the recent International Studies Association convention. I have not read enough of Neibuhr to make a critique of Inboden's points but I was curious about his final point about Neibuhr's opposition to pragmatism. I had always identified Realism with pragmatism and as a key Realist, I would have assumed that this was a value that Neibuhr supported. The essential point is that I need to read more Niebuhr to fully understand the relationship.
I would also particularly recommend one of the links in Inboden's essay to an essay by Paul Elie in the Atlantic a few years back on the Niebuhr.