estonia 2
Though much of Tallinn resembles a medieval city, the capital of Estonia has undergone rapid modernization to become the small Baltic state’s rendition of Silicon Valley. Source: Microsoft

At the outset of World War II, Adolf Hitler and Joseph Stalin approved the Molotov-Ribbentrop Pact, the famous non-aggression pact that divided Europe into German and Soviet spheres of influence. The treaty was predicated on the assumption that the two great powers would achieve preeminence on the European continent, and following the war, the Soviet Union retained control over several states that it had been formally awarded by the pact.