Henrik Ringbom attended a maritime security event in Tallinn, organized by the Foreign Ministry in Estonia, on 4 April 2025, focusing on new threats to submarine infrastructures, such as cables and pipelines. He also provided expert advice on this issue to the Finnish Foreign Ministry (13 February 2025), the Communication Committee of the Finnish Parliament (18 February 2025) and the Foreign and Defence Committees of the Swedish Parliament (5 June 2025). https://www.justdigi.ee/en/news/international-conference-critical-submarine-infrastructure-held-tallinn