The Orthodox deny the Immaculate Conception, and call it a heresy.
Our Lady of Lourdes had some news for them, and then a few years later asked for the consecration of Russia, to obtain their conversion.
Superficially they are attractive because they hold on to beautiful externals, and they have valid Orders and Sacraments. But in truth they are a cesspit of heresy and schism, to be avoided.
All that being said, we should pray ardently for them for two reasons. Our Lady loves them and wants them back. They are in her merciful sights, and She will not be thwarted forever. Secondly, they have a veritable army of men in valid Orders, which I think, may come in very handy in the not too distant future.
One other thing. I can recommend two Orthodox movies that are mind blowingly good, and do not offend our Catholic sensibilities. A good movie is hard to find. Here are two:
Topic: Proof that Eastern Orthodoxy is False (Read 3604 times)