On Feb. 27, a mild, dewy morning, Alitalia Flight 681 landed at Leonardo da Vinci airport in Rome after 13 hours in the air. A balding man with gray-white wisps of thin hair stepped out of coach class. He wore thick-rimmed brown glasses, black orthopedic shoes and a dark overcoat. He had a slight limp, and his back was stiff from the long flight. His belly was a bit swollen, due to many decades of cortisone treatments to help him breathe after he had lost part of a lung as a young man. No one could see the silver pectoral cross he wore under his coat, though it was the symbol of his authority.

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