President Donald Trump reacted Wednesday with a degree of bemusement toward Russia’s drone incursion into Poland, a NATO member that Trump has previously vowed to defend amid heightened tensions with Moscow. “What’s with Russia violating Poland’s airspace with drones?” Trump asked in a short post on Truth Social. “Here we go!” The brief mention of the incident — and the vague suggestion of continued fallout — came as US officials were digesting the overnight events, when more than a dozen Russian drones entered Polish airspace, spurring a response from NATO to scramble fighter jets to shoot them down. The incident...