An American Boeing RC-135W Rivet Joint reconnaissance aircraft with the call sign JAKE11 circles the Russian western enclave of the Kaliningrad region on a reconnaissance and surveillance mission.

The Russian enclave is the Kaliningrad region of Russia, which is connected to the mainland of the Russian Federation by sea, by air and in the form of a transit land railway corridor through the territory of Lithuania.
Until 1945, the territory of the current Kaliningrad region was the territory of East Prussia, which belonged to Germany and was disputed by Poland.
However, due to the territorial redistribution of Europe that occurred as a result of the Second World War, the territory of East Prussia was annexed to the Soviet Union.
The motives for joining were the presence of a western bridgehead for the USSR from where it was possible to attack Western Europe, the presence of a warm ice-free port in the Baltic Sea
After Stalin’s decision to annex East Prussia to the Soviet Union, the entire German population remaining there was deported from the region.