The Vatican today tries to maintain political relations (dialogue) with every country in the world, no matter how evil (Cuba, China, Vietnam etc.) The Russian Orthodox are just one more to dialogue with. "Dialogueing" with them does not legitimize their heresy and schism one bit.
The dogma can never be changed, the heretical and schismatic, "unless they are joined to the Church before the end of their lives, cannot share in eternal life, and will go into the everlasting fire which was prepared for the devil and his angels", even if they shed their blood for Christ:
Pope Eugene IV, Council of Florence, “Cantate Domino,” 1441, ex cathedra:
“The Holy Roman Church firmly believes, professes and preaches that all those who are outside the Catholic Church, not only pagans but also Jews or heretics and schismatics, cannot share in eternal life and will go into the everlasting fire which was prepared for the devil and his angels, unless they are joined to the Church before the end of their lives; that the unity of this ecclesiastical body is of such importance that only those who abide in it do the Church’s sacraments contribute to salvation and do fasts, almsgiving and other works of piety and practices of the Christian militia productive of eternal rewards; and that nobody can be saved, no matter how much he has given away in alms and even if he has shed blood in the name of Christ, unless he has persevered in the bosom and unity of the Catholic Church.”
+Ignatius stated in 105 AD that the catholic Church is where the bishop is, i.e. where the legitimate successor of an apostle is. The ecclesial tradition and organization has absolutely nothing to do with what makes the Church catholic, your papal historical posturings notwithstanding.