All these interfaith dialogues are done in secret and behind doors. There is no transparency. Not one of the Ecumenist hierarchs talks openly on the matter. The Orthodox faithful have no idea of what is happening, or what will happen to their Orthodox Faith. The Catholics have a multitude of heresies. They will not withdraw any of those heresies. How can we, the Orthodox, be united with them and still be divided on the issues that we all know?
https://orthodoxreflections.com/open-letter-on-ecumenism-to-his-all-holiness-bartolomeo-patriarch-of-constantinople/