Kaliningrad: The Russian Exclave at the Center of a Nuclear Warning to NATO
Russia has threatened to retaliate if NATO blockades or invades Kaliningrad, the latest incident of tensions being triggered over the strategic exclave.

TL;DR
- Kaliningrad, a Russian exclave on the Baltic Sea, is heavily militarized.
- It is geographically separated from mainland Russia and bordered by NATO members Lithuania and Poland.
- Russia has warned NATO against attacking or cutting off Kaliningrad, threatening nuclear retaliation.
- The region has become a new front for diplomatic tensions between Russia and NATO.