Laurent Combalbert, a professional negotiator, was the co-founder of ADN Group. Today he is President of TTA - The Trusted Agency. He trains and advises companies and organisations on trust, commitment and individual and collective performance. Marwan Mery, a professional negotiator, is the co-founder and the CEO of ADN Group. Each year. he conducts and assists dozens of negotiations around the world, and trains companies, NGOs and governmental agencies with his team.