How the man who became Pope John XXIII helped shape Vatican

ACI MENA, Nov 26, 2025 / 07:00 am

Pope Leo XIV’s journey to Turkey and Lebanon carries significant historical and diplomatic symbolism. His decision to make the mausoleum of Mustafa Kemal Atatürk his first stop immediately recalls the legacy of his predecessor, St. John XXIII, who became a cultural and spiritual bridge between East and West, very much like Istanbul (formerly called Constantinople), the city he arrived in 90 years ago.

In January 1935, only weeks after being appointed apostolic delegate to both Turkey and Greece, Archbishop Angelo Roncalli — the future St. John XXIII — arrived at Istanbul’s Haydar Pasha train station from Bulgaria. He began his mission in a country that at the time had no formal diplomatic relations with the Vatican.

Immediately after his arrival, he beg