An International Atomic Energy Agency (IAEA) task force began a mission Monday in Japan to review the controversial planned release of treated water from the Fukushima nuclear plant into the ocean. On Friday, the agency gave a briefing of their findings. To verify the levels of radioactivity in the treated water, the IAEA has collected water samples to be analysed in their labs in Europe. Energy Policy Researcher Mahawira Dillon talks about the key elements to monitor.