Alexis Tsipras, the prime minister of Greece, and the Ecumenical Patriarch Bartholomew I visited the Theological School of Halki on the Turkish island of Heybeliada. The school was closed years ago by president Recep Erdogan in a dispute with the Greeks over Cyprus and other issues. Today Turkey is increasingly isolated because of Erdogan’s policy, so he invited Tsipras and dangled the reopening of the school as bait. (Nulent Kilic/AFP)