Large language models (LLMs) are strategic productivity assets for businesses that will impact the lives of citizens around the world. For this reason, we firmly believe that it is essential to promote sovereignty, transparency, and openness in this strategic field. Having built the OpenLLM-France open source community (https://www.openllm-france.com/) with more 360 individual/company members, LINAGORA is now looking to expand this vision to the whole of Europe, taking into account the numerous languages that it represents. This talk will present associated challenges and show how we plan to address them. It will also include a call to all stakeholders at the Europe level interested in testing, experimenting with, and implementing open source LLMs to join us in this community.