Muslims all over the world are currently observing Ramadan. The month of fasting is supposed to be all about reflection, meditation and abstention - but Ramadan is becoming increasingly commercialised.
The Hagia Sophia in Istanbul has become a bone of contention. Since it was secularised in 1935, it has been a museum. Now Turkish nationalists want to turn it back into a mosque - while the Patriarch of Constantinople wants to use it as a church again. A photo essay by Klaus Dahmann.