Prof. dr. Leon Cizelj was elected as the president of the European Nuclear Society (ENS; www.euronuclear.org) for 2022 and 2023 at the proposal of the Nuclear Society of Slovenia. Amongst the most important ENS activities are international cooperation and networking of nuclear experts by organization of scientific conferences, expert consultations and communication on nuclear science and technology. The ENS associate more than 12 000 nuclear experts from the European community, United Kingdom and Israel, working in research, higher education, industry and regulatory bodies. Presidency of the association at a time when nuclear energy and related research are becoming an increasingly important element in ensuring a low-carbon future is a strong recognition of Slovenian nuclear researchers, professionals and to prof. Cizelj personally.