In 1987, Demetrios travelled to the Vatican where he was received by John Paul II.[2] At a solemn ceremony in St. Peter's Basilica, the patriarchs of East and West together recited the Nicene-Constantinopolitan Creed of the Church in Greek as originally defined in AD 381, without the controversial Filioque clause. The Pope later recalled the event in his ecumenical encyclical letter Ut Unum Sint.[3]