President-elect Donald Trump spoke with Russian President Vladimir Putin on Thursday, the first phone conversation between the two men since Trump won the election, said several people familiar with the matter. During the call, which Trump took from his resort in Florida, he advised the Russian president not to escalate the war in Ukraine and reminded him of Washington’s sizable military presence in Europe, said a person familiar with the call, who, like others interviewed for this story, spoke on the condition of anonymity to discuss a sensitive matter. The two men discussed the goal of peace on the European...