SEOUL,Aug.15(Xinhua)--SouthKoreanPresidentYoonSuk-yeolsaidonMondaytoimprovetieswithJapanbasedonthedeclarationadoptedbythenSouthKoreanPresidentKimDae-jungandthenJapanesePrimeMinisterKeizoObuchi.
"Wemustswiftlyandproperlyimprove(South)Korea-JapanrelationsbyupholdingthespiritoftheKimDae-jung-ObuchiDeclarationwhichproposedablueprintofa