I once mentioned buying Kashrut food items and was given the most gentle telling off by my confessor, who pointed out that a small portion of the price was donated to some Hebrew authority. The rebuke was so mild that I was left not sure whether he was pulling my leg?
Which leads me on to another snippet, I read in the Jerusalem Times that an Ultra Orthodox Rabbi had forbidden his female follower wearing wigs made in India. The reason, many Hindu women there give up their hair as an offering to their gods.
When the gentiles were first accepted as Nazarenes they were - after some controvesy - not required to accept circumcision but were to agree not to eat anything that had been offered to ideals.
Perhaps we should be as attentive in our practise.
As to the behaviour of western Christians there has been a long history of treating the Orthodox as lesser Christians since at least the time of the dreadful Crusades. For some it feels that the mission process may be a tempting way to increase their numbers, prestige and pockets....
Sorry, I am cynical, much of the tensions between groups appears to be about territory, status and numbers rather than 'principle'.
A question though. If the Orthodox are to be able to mission, open Churches and so in on in Europe and North America on what grounds may we object to the complement being returned, other than they do it in spades?