query: What year was the Havana Declaration released?
passage: Joint Declaration of Pope Francis and Patriarch Kirill
The Joint Declaration of Pope Francis and Patriarch Kirill, also known as the Havana Declaration, was issued following the first meeting in February 2016 between Pope Francis, who as the Bishop of Rome is the pontiff of the Catholic Church, and Patriarch Kirill of Moscow, Patriarch of Moscow and all Rus', Patriarch of the Russian Orthodox Church (ROC), the largest of the Eastern Orthodox churches. This was the first time leaders of the Roman Church and the Moscow Patriarchate had met. While the meeting was also seen as a symbolic moment in the history of relations between the Catholic Church and the Orthodox churches as a community, which had split in the Great Schism of 1054, centuries before the Moscow Patriarchate was constituted, it was not expected to lead to any immediate rapprochement between them.[1]
passage: Havana
The city of Havana was founded by the Spanish in the 16th century and due to its strategic location it served as a springboard for the Spanish conquest of the Americas, becoming a stopping point for treasure-laden Spanish galleons returning to Spain. King Philip II of Spain granted Havana the title of City in 1592. Walls as well as forts were built to protect the old city. The sinking of the U.S. battleship "Maine" in Havana's harbor in 1898 was the immediate cause of the Spanish–American War.