Before Russia invaded Ukraine the United States and its European allies signaled strongly that they would impose crushing sanctions if Russia, indeed, invaded. Russia invaded anyway. The threat of sanctions were not a deterrent.  After surprisingly heavy sanctions were imposed, Russia did not moderate its behavior and cease its attack. Just the opposite. The imposition of sanctions were not, therefore what is known in International Relations speak, a means of compellence. So what have the sanctions accomplished? And why might these sanctions and countermeasures by Russia be leading to a war of economic attrition between Russia and the West? To answer these questions, we are joined by Bruce Jentleson, a professor of political science at Duke University former senior state department official, and author of the new book  Sanctions: What Everyone Needs to Know.