[Note: This is a guest post by David M. McCourt, an assistant professor in the Department of Sociology at the University of California-Davis. His book, Britain and World Power Since 1945: Constructing a Nation’s Role in International Politics, has just been published by University of Michigan Press.] On Thursday the Scottish people will go to the polls to vote on independence from the United Kingdom, with the prospect of a “yes” vote more realistic than many believed only a few weeks ago. This raises important questions for Britain’s role in the world, and by extension for the future of...