Former executive director of the International Energy Agency, Nobuo Tanaka, stressed the significance of hydrogen and nuclear energy for Japan and South Korea during his keynote speech at the H.eco Forum in Seoul. Tanaka pointed out that clean hydrogen and nuclear power could position Japan and Korea as winners in the global energy and climate crises. He highlighted the importance of cooperation between the two countries in establishing a global supply chain for clean hydrogen and proposed trilateral collaboration with the US for sustainable nuclear energy solutions. Tanaka also addressed the challenges in nuclear energy, emphasizing the need for safety, effective waste management, and non-proliferation. He suggested the development of integral fast reactors and pyroprocessing as safer alternatives. The H.eco Forum, hosted by Herald Media Group, serves as a platform to raise awareness of environmental challenges. Tanaka's proposals aim to drive the transition towards a greener future by leveraging hydrogen and nuclear energy while fostering international collaboration and environmental consciousness.