Which canonical churches are you referring to? Russian Orthodoxy is the Church of the Apostles. Putin may or may not be acting in good faith. I don't know about him. I do know that Russian Christianity has graced the world with tens of thousands of saints who bear witness to our Lord Jesus Christ's love and mercy.
I appreciate your conviction, but have to disagree. Russian Church had started from lies, theft and bribery, and diligently carried on this tradition to modern days. Multitude of Saints that happen to be Russian, along with many true Believers, do not compensate for the Church corruption.