Tonight, arriving in his open air pope mobile, Pope Leo greeting 15,000 young people. >> Dear young people of Lebanon, peace be with you. >> A Lebanese choir [music] belting out Christian hymns.>> And prayers to an enthusiastic audience. The American Pope's visit to this small, diverse Middle Eastern country is centered on interfaith unity. Lebanon boasts 18 official faiths and sex.A fine line for the new pope to walk. Earlier today, meeting leaders from the Muslim Drews and Christian communities, planting ...