A Turkish nationalist holds an anti-Pope poster during a demonstration organized by the Great Turkey Party in Istanbul, Turkey, Sunday. Ecumenical Patriarch Bartholomew I, the spiritual leader of the world's Orthodox Christians, cautioned Turks against creating potential "unpleasant incidents" during Pope Benedict XVI's upcoming trip to Turkey. Bartholomew I said in an interview published in a Turkish daily newspaper that the pope's visit, set for Nov. 28 to Dec. 1, is a great opportunity for Turkey, and he would tell the pontiff that the country belonged in the European Union.