Hitler had already given him huge concessions in the Baltic states and in Poland, to buy a free hand against the West. But like all Russian rulers, Czarist or Bolshevik, Stalin had a big appetite. This was his chance to take over the Karelian Isthmus and dominate the Gulf of Finland. When his emissaries failed to get these concessions from the proud Finns by threats, Stalin set out to take them by force.
