His Highness, the fourth Aga Khan, is Imam to Shia Ismaili Muslims, and he is on a U.S. tour to mark the 60th year of his reign, a Diamond Jubilee.

The Aga Khan's stop in Atlanta is the first of a 10-day U.S. visit in commemoration of his 60 years of leadership (or Diamond Jubilee) over the approximately 20 million Ismaili Muslims around the ...