US Air Force/Tech. Sgt. Stephanie Longoria
US Air Force/Master Sgt. Scott Thompson
REUTERS/Vitaly Nevar
Ministry of Defense via AP, File
ALESSANDRO RAMPAZZO/AFP via Getty Images
REUTERS/Yves Herman
Screengrab
Google Maps/Insider
Finland officially became a member of the NATO military alliance on Tuesday.
Gavriil Grigorov/Sputnik, Kremlin Pool Photo via AP
HBO