There are migrants now stranded in the Balkans, an area with traditionally high tensions and low capabilities for coping with extra mouths to feed. And winter is rapidly approaching. Stratfor will be watching developments in the region closely, given concerns over migrant pressures enflaming still-simmering ethnic disputes in the region. But another bottleneck in the immigration route could have far-reaching effects, specifically for Greece, which is situated at the migrants' entry point to Europe....