<P>Istanbul¿s Hagia Sophia (¿Holy Wisdom¿), or Ayasofya, is one of the world¿s most visited buildings. Yet, few visitors have any idea of its long and complex story, or why it has always been a place where history, religion and politics collide. In July 2020, Turkish President Erdogan set off an explosive controversy by announcing that Hagia Sophia would now be modified into a mosque. This decision provoked fierce criticism from UNESCO because Hagia Sophia was enjoying World Heritage Site benefits. The United States, the European Union, Russia and Greece all chimed in. However, Erdogan¿s action was wildly popular in Turkey, with its 99% Muslim population. Why is Hagia Sophia so important to modern Turkey? Why this provocative decision, and why now? How could all the international critics be ignored? Why does the world care so much about this old building? Why should it continue to care?</P><P>This book explains President Erdogan¿s controversial decision in terms of Turkey¿s national, i