With a University background of International and Strategic Affairs, Arielle Denis was first a journalist and an activist on peace and disarmament issues. She published books, articles as well as several movies especially on conflicts issues.
She was for 10 years the co-Chair of the French Peace Movement, Mouvement de la paix up to 2010. From 2011 until 2016, she has been the campaign Director for the International Campaign to Abolish Nuclear Weapons (ICAN) for Europe, Middle East and Africa. She is now working as a consultant for the International Peace Bureau.