SEOUL, The main opposition Liberty Korea Party (LKP) on Thursday revealed an open letter calling on the United States to reach a deal on the permanent and complete denuclearization of North Korea during next month's summit with the North.

Hong Joon-pyo, the chief of the conservative LKP, entreated the U.S. to stick to its principle of "permanent, verifiable and irreversible" denuclearization of the North, with U.S. President Donald Trump set to meet North Korean leader Kim Jong-un on June 12 in Singapore.

"We hope that the U.S. and North Korea reach an agreement on a permanent and complete dismantling of North Korea's nuclear arsenal, not a political deal that is temporary and unstable," Hong said.

He said that the U.S. and the North need to reach a deal that will detail an inspection process and a timeframe in which the North should complete its denuclearization in order to press Pyongyang into full implemention.

"We strongly call for an agreement that contains the North's commitment to dismantling its existing nuclear weapons and removing its nuclear capability, along with stringent inspection by the International Atomic Energy Agency," he stressed.

Hong added that declaring an end to the 1950-53 Korean War or establishing a peace regime on the Korean Peninsula should be considered only after the North's denuclearization is completed.

"The South and the U.S should continue to strengthen their alliance in the process of or after the North's denuclearization," he added. "As the U.S. said, a potential cut or withdrawal of U.S. troops stationed in South Korea should not be discussed at the U.S.-North Korea summit."

Hong's remarks came one day after North Korea abruptly canceled a scheduled high-level inter-Korean meeting, citing ongoing joint military drills between Seoul and Washington, and threatened to nix the Trump-Kim summit.

Source: Yonhap News Agency