What this Romanian Orthodox theologian says is very similar to what Fr Luigi Giussani and Fr Julian Carrón said regarding dialogue and the life of Christian faith and identity.
“In this sense, the Orthodox Church considers that in the dialogue with other Christians it brings exactly the witness of the One Church of Christ, from which they separated over time by deviation from Orthodox faith. Of course, no Orthodox Christian is ever obliged to carry dialogues or to cooperate with other Christians if he or she is afraid of losing the Orthodox faith. At the same time, it is unfair to consider that all Orthodox Christians who carry theological dialogues and cooperate in practical matters in society with Christians of other confessions are traitors of Orthodoxy. A peacemaker Orthodox Christian can remain faithful to Orthodoxy without becoming fanatic, if he or she confesses Orthodox faith in dialogue with other Christians, provided he or she makes no compromise.”
~for more read the article here.