President Lee Jae Myung said Sunday reunification with North Korea remains South Korea's ultimate goal and a constitutional duty, vowing to pursue it through dialogue rather than unilateral action.

Lee, in Johannesburg for the Group of 20 summit, made the remarks in a written interview with Turkey's Anadolu Agency, published ahead of his state visit to Ankara.

"Reunification remains our ultimate goal and is not merely an ideal but a constitutional duty. Our government will not pursue reunification through a unilateral approach," Lee said in the translated interview.

"Our government seeks gradual and phased reunification through peaceful coexistence and mutual development, reflecting the democratic will of all people on the Korean Peninsula," he added.

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