Illusions of Managing History: The Enduring Relevance of Reinhold Niebuhr

Boston University's YouTube description:

Andrew J. Bacevich, a College of Arts and Sciences professor of international relations, discusses the legacy of American social critic Reinhold Niebuhr and the relevance of his ideas to the current U.S. military engagement in Iraq in the 2007 University Lecture.

This is a must watch lecture.