When Pope Benedict XVI greets U.S. President Barack Obama at the Vatican on July 10, the symbolism and sheer star power of the encounter will keep the pundits chattering away. The photo op alone is worth a thousand words: The 82-year-old man in white, the world’s most recognizable religious leader and head of its largest single denomination comes face-to-face with the charismatic first black President of the world’s last superpower
