Signaling improved ties between Seoul and Tokyo, President Yoon Suk-yeol and Japanese Prime Minister Fumio Kishida announced earlier this month that South Korean experts would be allowed to inspect the impending release of radioactive water from the damaged Fukushima nuclear power plant.

But the Yoon administration could soon find itself in hot water as it grapples with mounting pressure from the main opposition Democratic Party (DP) and a failure to hammer out what exactly the South Korean delegation will be allowed to do while in Japan.