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South Korea has sent a letter to the president of the U.N. Security Council over North Korea's September land mine explosions in the Demilitarized Zone that injured three South Korean soldiers, urging Pyongyang to apologize and take responsibility for violating the Korean War Armistice Agreement. Yonhap reports the foreign ministry confirmed the letter was dispatched on Oct. 22, with KBS World noting spokesperson Park Doo-soon addressed the escalatory actions near the border. The unification ministry separately urged the North to halt acts that raise cross-border tensions and breach the armistice. Korean outlets frame the move as a diplomatic step to hold the North accountable, though no official reaction from Pyongyang is reported in the documents.