Why is Kaliningrad a Russian enclave?

Kaliningrad Oblast was originally part of East Prussia, Germany, and the capital, Kaliningrad, was originally named K?nigsberg. East Prussia is the "Longxing Land" of Prussia, the predecessor of Germany. K?nigsberg served as the headquarters of the Teutonic Knights and the capital of the Principality of Prussia. The German philosopher Immanuel Kant was a native of K?nigsberg.

Germany lost a large amount of territory after its defeat in World War I, but still retained East Prussia, with K?nigsberg as its capital. But East Prussia was separated from the German mainland by the restored Poland and became an enclave. The Germans were deeply concerned about this at the time, and Hitler regarded it as a "national humiliation." Note:

That is why the Germans cheered when Hitler reconnected East Prussia to the German mainland by invading Poland. Hitler was also proud of his victory in the war of aggression and continued to expand the scale of his aggression. Finally, he raised his sword against the Soviet Union, which had greater potential national power than Germany.

The result was that Nazi Germany was completely defeated by the anti-fascist alliance led by the United States and the Soviet Union. Germany lost World War II again after World War I. Out of the need to liquidate German militarism, the occupying power decided to abolish the Prussian state, and East Prussia was divided into two parts, annexed to the Soviet Union and Poland.

Because the influence of the Soviet Union was far greater than that of Poland, the economically developed northern part of East Prussia, centered on K?nigsberg, was incorporated into the Soviet Union. The Soviet Union changed the northern part of East Prussia to the Kaliningrad Oblast, and K?nigsberg to the Kaliningrad City. Within the Soviet Union, it was assigned to the main member country, the Russian Federation.

In the post-World War II Soviet Union, the land connection between Kaliningrad and Russian territorial subjects was separated by the three joining countries of Lithuania, Latvia, and Belarus. However, this was not a problem within the unified Soviet Union. Kaliningrad was naturally not an "enclave" during the Soviet era.