from blogs.reuters.com: When Pope Francis meets the spiritual head of the world’s Orthodox Christians next week, the speeches and symbolism will focus on how these ancient western and eastern wings of Christianity want to come closer together. After almost a millennium apart, however, the key to the elusive unity they seek does not lie in Jerusalem, where the Catholic pope and Ecumenical Patriarch Bartholomew will embrace on May 25. If anywhere, that key lies in Moscow.