South Korea has expressed hope North Korea will stick to its declared will to completely abandon its nuclear program during the upcoming summit with the U.S. regardless of a recent change in a nuclear deal involving Iran. 

Foreign Ministry Spokesman Noh Kyu-duk relayed the South Korean government’s stance in a regular media briefing on Thursday in response to a question on the ramifications of the U.S.’ withdrawal from the Iran nuclear deal. 

Without directly addressing the question, the spokesman said it's worth noting the North is expressing willingness for complete denuclearization. 

He also said the South Korean government will closely coordinate with the U.S. to achieve complete denuclearization of the Korean Peninsula as specified in the Panmunjeom Declaration and will not spare any assistance for the success of the North Korea-U.S. summit. 

Noh was asked about a recent remark by U.S. National Security Adviser John Bolton that Washington is asking for dismantling all nuclear programs, both uranium and plutonium, as the North agreed in the 1992 joint inter-Korean declaration. 

In response, he pointed to the phrase in the Panmunjeom Declaration that says the two Koreas will fully implement all existing agreements and declarations adopted between the two sides thus far.

Under the 1992 agreement, the two Koreas agreed not to test, manufacture, produce, receive, possess, store, deploy or use nuclear weapons. They also agreed on no uranium enrichment and no plutonium reprocessing while promising to use nuclear energy only for peaceful purposes.