In the process of implementing market reforms, many post-socialist countries have struggled to preserve economic and political integration. Using a statistical model of commodity trade, we quantify the evolution of economic integration observed among regions within Russia during 1995-1999, and...

In integrated economies, inter-city-price differences can be explained largely by transportation costs. This is not the case in Russia. Here, we argue that this is due to an internal border that separates a region we denote as the Red Belt from the rest of Russia. Regions within the Red Belt...