As we hurtle toward an anticipated second summit encounter between U.S. President Donald J. Trump and North Korean leader Kim Jong Un in Hanoi, Vietnam, at the end of this month, one of the likely concessions on offer by the United States appears to be a declaration to end the Korean War.

This declaration—and the shape it might take—received considerable discussion in 2018, a year that saw unprecedented inter-Korean high-level engagement and the first-ever summit meeting between a sitting U.S. president and a North Korean leader in Singapore last June.

One report