Tears flow as Pope visits Europe's migrant frontline

Pope Francis and Greek Prime Minister Alexis Tsipras (R) meet as Pope Francis visits the Greek Island of Lesbos aiming at supporting refugees and drawing attention to the front line of Europe"s migration crisis in Lesbos in this handout photo released by the Greek Prime Minister"s press office, April 16, 2016.

Pope Francis arrived on the Greek island of Lesbos on Saturday, turning the world's attention to the frontline of Europe's migrant crisis which has claimed hundreds of lives in the past year.

Francis, leader of the world's 1.2 billion Roman Catholics, was scheduled to spend about six hours on the small Aegean island. Based on his schedule, he was to meet 250 refugees and have lunch with eight of them.