REUTERS/Dylan Martinez - Posters for and against Scotland's independence fly from a pole in Clydebank, Scotland, September 16, 2014. The referendum on Scottish indepence will take place on September 18, when Scotland will vote whether or not to end the 307-year-old union with the rest of the United Kingdom.

Opinion

Scotland Independence, English Cities and the State of American Federalism

September 17, 2014, Bruce Katz

With Scotland's referendum on independence, Jeremy Shapiro and Fiona Hill look at the problems of governing large and diverse countries and what effect the results of the referendum may have on other European nations.

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