South Korea's foreign ministry called in a senior Japanese diplomat on Sunday and filed a strong protest after Tokyo sent a central government official to a local event aimed at bolstering the country's claims to the South's easternmost islets of Dokdo. Lee Sang-deok, director-general in charge of Northeast Asia affairs at the foreign ministry, filed the protest after summoning Hisashi Michigami, a senior minister at Japan's Embassy in Seoul, the ministry said. Lee also conveyed a verbal note that Japan's territorial claims to Dokdo are nonsense and amount to denying history, it said.