Vladimir Putin is shaping Europe from its fringes, one act of aggression at a time. Nearly four years into his full-scale assault on Ukraine, the 73-year-old Russian president has widened the battlefield — testing NATO’s defenses…

Vladimir Putin is shaping Europe from its fringes, one act of aggression at a time. Nearly four years into his full-scale assault on Ukraine, the 73-year-old Russian president has widened the battlefield — testing NATO’s defenses…