Russian Orthodox Patriarch Kirill of Moscow and Pope Francis pose for photos at the beginning of their meeting at Jose Marti International Airport in Havana in this Feb. 12, 2016, file photo. In an Easter message to Patriarch Kirill, the pope prayed that the Holy Spirit would "transform our hearts and make us true peacemakers, especially for war-torn Ukraine." Patriarch Kirill has been an outspoken supporter of Russian President Vladimir Putin's war on Ukraine. (CNS photo/Paul Haring)