It was the first time a member of the Kim dynasty was known to set foot on South Korean soil since 1953. The two men shook hands and smiled for news cameras.

Kim and Moon planted a pine tree together as a symbol of peace before resuming their second meeting of the summit. They also unveiled a stone plaque placed next to the tree that was engraved with a message saying “Peace and Prosperity Are Planted.”

The summit has drawn measured responses from around the world.

“After a furious year of missile launches and Nuclear testing, a historic meeting between North and South Korea is now taking place. Good things are happening, but only time will tell!” tweeted President Trump, whose own fiery rhetoric and aggressive posture are credited by some analysts with helping to bring North Korea to the bargaining table.

British Foreign Secretary Boris Johnson said he welcomes the summit but doesn’t expect any major breakthroughs.

“I am very encouraged by what’s happening,” Johnson told reporters Friday. “I don’t think that anybody looking at the history of North Korea’s plans to develop a nuclear weapon would want to be over-optimistic at this point.”

China has welcomed the summit, saying it applauds the countries’ leaders for taking a “historic step” toward peace.

The Associated Press contributed to this report

Edmund DeMarche is a news editor for Follow him on Twitter @EDeMarche.