Key evidence in sinking of Cheonan warship has not been taken care of

천안함 피격 北소행 증거 어뢰추진체 1번 글자 부식 Five years ago， South Korea′s warship Cheonan was torpedoed in waters off the nation′s west coast.
Korea′s Constitutional Court dismisses appeal on forced labor issue S. Korean foreign minister predicts progress on N. Korea′s denuclearization President .
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