The guest book of the Mausoleum of Mustafa Kemal Ataturk, the founder of modern Turkey, shows an hand-written note by Pope Francis reading in Italian "I express the most sincere vows that Turkey, a natural bridge between two continents, be not only a crossroad of paths, but also a place of meeting, of dialogue and of serene coexistence among men and women of good will of every culture, ethnicity and religion", in Ankara, Friday, Nov. 28, 2014. Pope Francis travels to Turkey this weekend amid new Muslim-Christian tensions and a violent war next door, with Islamic State militants seizing chunks of territory in Iraq and Syria and sending 1.6 million refugees across the border into Turkey. (AP Photo/Markus Schreiber)