A rising number of mysterious drone sightings near airports and military bases has fueled concern in Europe over alleged Russian incursions into NATO airspace, with some of America’s allies already saying the continent is in a gray zone between peace and war — accusing Moscow of escalating “hybrid warfare.” In Sweden, CBS News saw that alliance in action this week — in waters contested by Russia — and watched as an enemy submarine prepared for a covert espionage and sabotage mission in the Baltic Sea against America’s NATO allies in northern Europe. It was just a military exercise, launched from Stockholm’s harbor, and a German submarine played the role of the unnamed enemy being hunted by NATO forces across the Baltic Sea. For more, head to the link in our bio. #trump #usa #nato #military #sweden #germany #russia #france #submarine