A US Marine launches a Switchblade drone during an exercise at Camp Pendleton in California in September 2020.US Marine Corps/Cpl. Jennessa Davey Russia has devoted increasing military resources to Ukraine but maintains an outpost in Kaliningrad. Perched on the Baltic, nuclear and conventional forces in Kaliningrad can strike deep into Europe. Loitering munitions that Ukraine is using may be useful for tracking Russian missiles in Kaliningrad. Russian President Vladimir Putin's decision to invade Ukraine in February 2022 has pushed tensions between Moscow and NATO to their highest level in decadesOver the past 18 months, there have been close calls along the alliance's borders with the two warring countries, and NATO and Russian aircraft have tangled over the Black Sea.