Among the 15,000 faithful gathered in the square were Cardinal Sean P. O'Malley of Boston and Greek Orthodox Metropolitan Methodios of Boston. The two leaders were heading a 100-member Catholic-Orthodox ecumenical pilgrimage from the United States to Rome, then Istanbul, Turkey, and ending in St. Petersburg, Russia.
Been to Istanbul 3 times...will not visit again except when Turkey is liberated.
But another trip to Russia is in the works...