Source: TASS Russian News Agency The Russian Orthodox Church, with an estimated congregation of about 50 million believers, is the largest of the  canonical national Orthodox Churches. MOSCOW, February 3. /TASS/. The forthcoming Holy and Great Council of the Orthodox Church that is due to convene on the Isle of Crete this summer will endorse decisions only upon consent of all the fourteen Patriarchs of canonical national Orthodox Churches, Metropolitan Hilarion, the chairman of Moscow Patriarchate’s Department for External Church Relations said on Wednesday. “All the decisions at the Pan-Orthodox Council will be taken by consensus,” he said at a…