Who gets credit for the thaw in Korea?

In this era of hyperpartisanship, it’s hard to agree on much. But one thing that seems clear to everyone involved is that the events that transpired last week on the Korean peninsula were remarkable. North Korea’s Kim Jong-un met South Korea President Moon Jae-in at the DMZ.
Then, leaders of the two nations, still technically at war, exchanged pleasantries as Kim crossed onto South Korean-controlled soil. He is the first North Korea leader to ever visit the south.
But while we can ag