Russia is pouring troops and weapons — including missiles capable of carrying nuclear warheads — into its western exclave of Kaliningrad at such a rate that the region is now one of Europe’s most militarized places.

A NATO official, writing to RFE/RL on condition of anonymity, said that Moscow is stationing “thousands of troops, including mechanized and naval infantry brigades, military aircraft, modern long-range air defense units and hundreds of armored vehicles in the territory.” MORE