Turkey reopens a mosque converted from an ancient Orthodox church in Istanbul for Muslim worship, four years after President Recep Tayyip Erdogan ordered its transformation. In 2020, Erdogan ordered the building -- which was a Byzantine church, then a mosque and then a museum -- to be converted into a Muslim place of worship one month after a similarly controversial ruling on the UNESCO-protected Hagia Sophia. The decision in 2020 to convert it drew an angry response from neighbouring Greece, which called the move "yet another provocation against religious persons everywhere". The Holy Saviour in Chora was a Byzantine church decorated with 14th-century frescoes of the Last Judgement that are still treasured by Christians. IMAGES