It is pretty clear that President Moon and Kim Jong-un are going to be putting a full court press on President Trump to declare an end to the Korean War this year:
South Korean President Moon Jae-in said his goal is to make “irreversible progress by the end of the year” toward denuclearization and a permanent peace on the Korean Peninsula in an interview on Friday.
A tangible step in that direction would be a formal declaration to end the 1950-53 Korean War, which ended with an armistice agreement, not a peace treaty, Moon told Indonesia’s Kompas newspaper in a written interview published two days after his special envoy returned from a trip to Pyongyang and met with North Korean leader Kim Jong-un.
The interview came ahead of Indonesian President Joko Widodo’s three-day state visit to Seoul kicking off Monday. [Joong Ang Ilbo]
You can read more at the link, but I expect a lot of flattery and pretend denuclearization concessions from the North Koreans to get him to agree to end the Korean War. Kim is probably hoping that Trump will go along with the pretend denuclearization strategy as way to boost poll numbers prior to the mid-term elections in the US. We should see over the next couple of months if pretend denuclearization will be what Trump decides to do.
So why are President Moon and Kim Jong-un so intent on end the Korean War? That is because once the war is officially ended this then challenges the legitimacy of the US-ROK alliance. If there is no longer hostilities between the two Koreas then why does the US military need to be there?
I believe that President Moon is too smart to advocate against keeping USFK in Korea post-peace treaty because that will mobilize the conservative opposition against him. However, Moon can use his surrogates to make life difficult for USFK to where the Trump administration could decide to withdraw on its own. This gets Moon and his left wing base in South Korea what they ultimately want, USFK withdrawal without getting blamed for it.
With the end of the US-ROK alliance Moon and Kim can move forward with their confederation idea which will essentially lead to unification on North Korean terms.