epa05325007 Pope Francis (R) talks with Sheikh Ahmed Al-Tayyib (L), Egyptian Imam of al-Azhar Mosque, exchange gifts at the Vatican, Vatican City, 23 May 2016. Catholic media called the visit of the Imam, who is said by some Muslims to be the highest authority in Sunni Islam, as a new step in the relations of Catholic Christians and Muslims. EPA/MAX ROSSI / POOL