He served as the Special Representative of the UN Secretary General (2012- 2014).
From 2005 to 2011, he was member of four successive Lebanese governments as Minister of Environment, Administrative Reform, Culture, Information and acting Minister of Foreign Affairs.
Previously, he worked in the World Council of Churches in Geneva and held various positions in ecumenical organizations, responsible of Christian-Muslim relations, intercultural and interreligious dialogue.
He taught at the Université Saint Joseph, Balamand University, the University of Geneva, Amsterdam Free University, Harvard University and the American University of Beirut.
He authored a number of books and articles on contemporary Arab issues, religion and politics, interreligious and intercultural dialogue.
Views
Mitri states his role is more as an advocate for the intellectuals and the artists along with their freedom of expression and thought. He has also known to be a staunch advocate for Lebanese unity.[3]
Books
The War on Lebanon, The story of UNSC Resolution 1701, Arab Center for Research, 2022
Les chemins rudes, deux ans en Libye, Dar Riad al Rayiss, 2015.
(تحرير، مع ساري حنفي)، الدولة العربية والقوية: المآلات بعد الإنتفاضات العربية، بيروت، الدار العربية للعلوم، 2019.
"Madinah Ala Jabal". Dar Annahar, Beirut. 2004
سطور مستقيمة بأحرف متعرجة: عن المسيحيين الشرقيين وعلاقتهم بالمسلمين، دار النهار، بيروت، 2007 و2014
In Gottes Namen? Religion und Politik in den USA, Lembeck, Frankfurt am Main, 2005.
Au nom de la Bible, au nom de l'Amérique. Labor et Fides. 2004. ISBN978-2-8309-1138-1.
(Ed.) Religion Law and Society, A Christian-Muslim Discussion, WCC/KOK Pharos, Geneva/Amsterdam, 1995.
(Ed.) Religion and Human Rights, A Christian-Muslim Discussion, WCC, Geneva, 1997.