(Mark Landler and Jason Horowitz) Pope Francis welcomed President Trump to the Vatican on Wednesday, shaking his hand before ushering him into his study for the first face-to-face meeting of the two leaders, who symbolize starkly different views of the world. Around 8:20 a.m., under a crystalline blue sky, the president’s motorcade rolled into the courtyard of the Apostolic Palace, where ostrich-feather-plumed Swiss Guards saluted as Mr. Trump and his wife, Melania, stepped out of an armored limousine. (...)