Why are certain Eastern Patriarchs not addressed? Why are many Protestant Churches not mentioned?
The Eastern Patriarchs who are not mentioned (e.g. the Melkite, Maronite and Chaldaean Patriarchs all recognize the Primacy of the Pope and are in Communion with the Catholic Church: they are therefore addressed through the person of the Pope. The mainline Protestant churches are mentioned, but since there are over 30,000 churches nowadays, it was evidently easier to address everyone with the phrase ‘Leaders of Christian Churches everywhere’. Thus everyone is indeed included.