[Alex Murphy]

For the Catholic Church, the Pontiff continued, the top priority in ecumenical work is dialogue with the “Orthodox churches and the ancient Eastern churches, with which bonds of the closest intimacy exist.” He reminded his audience that in talks with the Orthodox world, “we have reached a crucial point of confrontation and reflection: the role of the Bishop of Rome in the communion of the Church.”

A valid celebration of the Eucharist can't be had, unless the receiving party has pledged submission and obedience to the Pope's authority over all believers, and the celebrant has valid orders from said Pope. Thus, the short-term goal behind any Catholic ecumenical effort is creating subservience to the Pope.
-- Remember the ultimate goal of ecumenism: Pope

[Campion]

A valid celebration of the Eucharist can't be had, unless the receiving party has pledged submission and obedience to the Pope's authority over all believers, and the celebrant has valid orders from said Pope.

This is false. Putting it in a blockquote with a citation behind it, as though it had some authoritative source behind it, doesn't make it any less false.

Every Eucharistic liturgy the Orthodox hold is sacramentally valid, according to the Catholic church.

[markomalley]

That is a really neat trick, Alex...quoting yourself and making it appear like it comes from an article posted by some miscellaneous Catholic.

Some mad skills you’ve got there my FRiend...impressive.