"If any moderate deal provides North Korea with assistance, there is a risk that Pyongyang would advance its nuclear and missile programs, posing a threat (to the Korean Peninsula)," Hong said in a press conference with foreign correspondents in Seoul.

Hong's conservative party takes a hard-line stance toward the North, calling North Korea's recent olive branch a "fake peace show."

He said that a declaration of an end to the war should be made only after North Korea completely dismantles its nuclear arsenal.

"I'm strongly opposed to the declaration on the occasion of the upcoming summit," he said. "A possible cut or withdrawal of US troops stationed in the South should also not be on the table." (Yonhap)