South Korea is calling on North Korea to take responsibility for the torpedo attack against the warship Cheonan,...should inter-Korean talks resume. Seoul′s unification ministry says... it plans to secure Pyongyang′s responsible actions by discussing many possible topics at those talks, including the so-called May 24th sanctions on the regime. The sanctions were imposed following the sinking and were considered necessary for normalized inter-Korean development. While North Korea continues to deny orchestrating the attack... Washington has reaffirmed its position. The U.S. Department of State said the investigative report published by multi-national experts five years ago concluded that Pyongyang′s torpedo was behind the Cheonan incident.