Speaking at the Chey Institute for Advanced Studies, he thanked South Korea for its non-lethal aid to Ukraine, but urged it to do more, adding there is an "urgent need" for ammunition.

South Korea has signed major deals providing hundreds of tanks, aircraft and other weapons to NATO member Poland since Russia invaded Ukraine. But President Yoon Suk-yeol has said a South Korean law that forbids supplying weapons to countries engaged in conflict makes it difficult to send arms to Ukraine.