Rouven has been very active in CISV throughout the past 10 years. After having contributed to the development of the organization within the Junior Branch, and planning a number of workshop weekends and camps, he entered the training field of CISV Germany by first training participants for one of CISV programs, the Seminar Camp, and then joining the team for the national training. Within the Truth-Project he is part of the Activity Development Team, working on Activity resources for youth organizations. Due to the Covid-19 pandemic, together with Sabrina he took educational activities to Online-Meetings to enable children and youth to experience intercultural encounters, even in times where international in-person camps are impossible to take place responsibly.