Kim Min-seok, chairman of the ruling Democratic Party of Korea (DPK) and former prime minister, is facing a test of his credibility after an internal investigation failed to substantiate his claims of a “secret alliance” involving his leadership rival and the nonmainstream religious sect Shincheonji. On Friday, Kim apologized again during the party’s Supreme Council meeting. It was his third apology over the controversy, following remarks at Tuesday’s closed-door meeting of party lawmakers and on the party’s YouTube channel on Thursday. “I once again offer my apologies to everyone who was hurt as I raised serious concerns and warned about religious interference in politics during the party’s leadership election,” Kim said. He was referring to his allegation in the run-up to the Aug. 17 party leadership election that the anti-President Lee Jae Myung faction within the party and Shincheonji had formed a secret alliance. The claim targeted the camp of his leadership rival, former Chairman Rep. Jung Chung-rae. After raising the allegation and winning the leadership race, Kim