ADN Group
Complex Negociation
level 3


The Expert Masterclass is the third step in the full training process. It can only be applied for if the participant has completed the Advanced course. In this Masterclass we will go through analyzing the credibility of threats and ultimatums, managing difficult profiles, relying on intuition, confidence in the team, the capacity to thwart maliciousness, strategic questioning, managing dilemma or the capacity to get the upper hand in any situation. This Masterclass subtly alternates between a theoretic approach and both individual and group role-playing.


The Masterclass is for any person who must negotiate at their work or in their specialized field, regardless of their level.


Has attended the ADN Essentials and ADN Advanced Complex Negotiation masterclasses.


day 1
day 2
In-person or remote
2 days / 14 hours
2 900€ / person
of people recommend the course
of people are certified

The masterclass is hosted by Marwan Mery at our Paris headquarters.

Marwan Mery is a professional negotiator. He works, daily, with businesses, government organisations and NGOs to help resolve their complex situations, including critical cases (kidnapping and ransom, extortion, suicidal persons...), commercial high-stakes negotiations, major social conflicts, diplomatic relations, and even therapeutic consultations where patients refuse to take their medication. Consultant at the United Nations and guest speaker at Harvard University on the subject of complex negotiations, he is the author of several successful books. He also manages ADN Group, an agency of professional negotiator made up of thirty experts located in France and abroad. Marwan is a former officer® specializing in influence and crisis negotiation within the COS, the French special operations command.

Learn more


  • Analyse the credibility of threats and ultimatums
  • Neutralise difficult profiles
  • Make informed decisions
  • Reverse the balance of power
  • Get the upper hand in any kind of negotiation
  • Conduct a difficult debriefing


  • An online questionnaire including situational exercises: NSTAA©, duration: 25 minutes
  • A complete debriefing of practical cases and situations during the training course

Certified Qualiopi

ADN Group is a training organization that has obtained Qualiopi certification under the Training Action category.