After a year of tensions, the first North-South Korea summit in more than a decade began on Friday with a handshake.

Surrounded by bodyguards and other members of his delegation, North Korean leader Kim Jong Un emerged right on cue from a large building on the northern side of the border in the truce village of Panmunjom.

He walked down a wide flight of stairs and strolled confidently toward South Korean President Moon Jae-in to begin the historic meeting.

Smiling broadly and exchanging greetings, the two shook hands for a long time, exchanging greetings and looking from outward appearances like old friends.

Moon had awaited Kim’s arrival at “Freedom House”, a building on the southern side of the Demilitarized Zone. As soon as he saw Kim come out, he walked to meet him at the border so that their handshake would be at the most symbolic of locations, each leader standing on his side of the military demarcation line that separates North from South.

Their hands still clasped, Moon invited the North Korean leader into the South for the first time ever, just one step over a line marked by an ankle-high strip of concrete.

Read: Live and unfiltered: Kim Jong Un captivates South Koreans

After he did, Kim, in return, gestured for Moon to step into the North. They both did, and then returned to the South together, hands held.

Kim was then met by South Korean children bearing flowers and a military honor guard before he headed into the summit hall to sign a guestbook, visibly out of breath.

Like everything about Friday’s summit, the handshake and all the atmospherics around it were carefully orchestrated and agreed upon in advance. North and South Korean officials conducted three days of on-site rehearsals to map out virtually every move of the leaders’ initial encounter.

“I feel like I’m firing a flare at the starting line in the moment of [the two Koreas] writing a new history in North-South relations, peace and prosperity,” Kim told Moon as they sat at a table, which had been built so that exactly 2018 millimeters separated them, to begin their closed-door talks.

Moon responded that there were high expectations that they produce an agreement that will be a “big gift to the entire Korean nation and every peace loving person in the world”.

A striking contrast

The moment was a striking contrast to the rising fears of conflict that dominated relations just one year ago, when Kim was test-launching long-range missiles at a record pace and trading crude insults with US President Donald Trump.

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It was the second big North-South handshake in as many months — coming after Moon and Kim’s younger sister, Kim Yo Jong, who accompanied him on Friday, shook hands at the opening ceremony of the Pyeongchang Winter Olympics in the South in February.

That seemingly impromptu moment came as a joint North-South team marched into the Olympic Stadium, part of an effort to use the Games to try to improve relations.

Moon, elated at the sight, turned and shook the hand of Kim’s sister, who was seated right behind him in the VIP box on the first trip to the South ever by a member of the North’s ruling family. The image of the two beaming with pride stood out all the more because US Vice President Mike Pence, representing the White House, sat stone-faced nearby.

Photos of that handshake were top news the next day in both Koreas.

The Koreas have a host of difficult and often seemingly intractable obstacles ahead of them, but no matter the outcome of the summit, they seemed acutely aware that the photos of Kim and Moon’s handshake will be bound for the history books.