Who is in charge of the Cathedral of the Holy Spirit in Constantinople (Istanbul)?
It may be that even if the rector and the Latin bishop had decided to restore the high altar or to modify the sanctuary so that ad orientem liturgies would be celebrated at the free-standing altar, Pope Francis might have nonetheless celebrated it "versus populum." I think he could have done it here anyway, especially with Eastern Catholics and Orthodox present. Does he have any sense of a liturgical patrimony and praxis common to both East and West?
His homily.