Source: The National Herald BY CONSTANTINE S. SIRIGOS NEW YORK – Archimandrite Vasileios, former Abbot of the Iveron Monastery of Mouth Athos, was the keynote speaker at the annual celebration of Greek letters on the occasion of the Feast Day of the Three Hierarchs presented by the Archdiocese of America. Guests were welcomed to the nave of Holy Trinity by the Dean of the Cathedral, Fr. John Vlahos after a performance of the Archdiocesan Byzantine Choir. Archbishop Demetrios offered closing remarks. The feast day of the three fathers of the Orthodox Church, St. Basil the Great, St. Gregory the Theologian…