The crux of Magister's article:
The fact that Bergoglio has a soft spot for Russia had already been seen with the outbreak of war in Syria, when he called for a day of prayer and fasting to oppose the armed intervention of the United States and France against the regime of Damascus, and Vladimir Putin publicly praised him.
Then there is the influence of the ecumenical factor: of the 200 million Orthodox Christians in the world, 150 million belong to the patriarchate of Moscow and “of all Rus’,” and it is therefore with Moscow above all that the pope wants to cultivate good relations.
Today the almost five million Ukrainian Catholics know very well that they are the true obstacle to the encounter between the pope of Rome and the patriarch of Moscow. But they will not agree to be sacrificed on the altar of this ecumenical dream.
Go read the rest at the link above for more background on the Roman response to events.