
Taken together, the domestic deployments - to guard against terrorism - are among the largest in Western Europe since World War II. They come as European militaries are tapped to address an unusually wide range of challenges at once: a resurgent Russia, grinding conflicts in the Middle East, migration across the Mediterranean and smaller wartime deployments far from their borders.
Confronted by terrorism, European leaders rushed their armies onto their streets in the aftermath of attacks starting in 2015. Although advocates say the deployments help bolster security, the peacetime duty has stretched forces thin.












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