Turkish President Recep Tayyip Erdogan on Friday ordered another ancient Orthodox church that became a mosque and then a popular Istanbul museum to be turned back into a place of Muslim worship. The decision to transform the Kariye Museum into a mosque came just a month after a similarly controversial conversion for the UNESCO World Heritage-recognised Hagia Sophia. Both changes reflect Erdogan’s efforts to galvanise his more conservative and nationalist supporters at a time when Turkey is suffering a new spell of inflation and economic uncertainty caused by the coronavirus. But they have added to Turkey’s tensions with Greece and its Orthodox Church. The Greek foreign ministry called the decision “yet another provocation against religious persons everywhere” by the Turkish government.