Estonia:

Although initially the Germans were welcomed by most Estonians as liberators from the USSR and its oppressions, and hopes were raised for the restoration of the country's independence, it was soon realised that the Nazis were but another occupying power. The Germans used Estonia's resources for their war effort; for the duration of the occupation Estonia was incorporated into the German province of Ostland. The Germans and their collaborators also carried out The Holocaust in Estonia in which they established a network of concentration camps and murdered thousands of Estonian Jews and Estonian Gypsies, other Estonians, non-Estonian Jews, and Soviet prisoners of war.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". Who was in control of Estonia before the Germans?
the USSR