North Korea said it would close a key missile test facility in the presence of “international experts” and potentially destroy its primary nuclear complex if the United States agrees to corresponding measures, South Korean President Moon Jae-in announced in a joint press conference with Kim Jong Un Wednesday.

The two leaders made the announcement on the second day of a three-day summit, their third this year, as part of efforts with the United States to contain the threat of war on the Korean Peninsula.

Speaking to the media Wednesday after a brief signing ceremony, Kim and Moon vowed to bring peace to the Korean Peninsula once and for all, something they first committed to at their April summit.

“The world is going to see how this divided nation is going to bring about a new future on his own,” Kim said to applause from those gathered.

The two leaders also agreed to a handful of non-military announcements, including plans to submit a joint bid to host the 2032 Summer Olympics and to create rail and road links between North and South within the next year.

“The era of no war has started,” said Moon, the first South Korean president to visit Pyongyang since 2007.

The balls in Washington’s court

In the agreement signed Wednesday, Pyongyang pledged to destroy both the Tongchang-ri missile engine test site and the Yongbyon nuclear site, which is believed to be used for the production of fissile material, if the United States takes “corresponding measures.”

Analysts say the ball is now in Washington’s court.

It’s been more than three months since Kim met US President Donald Trump in Singapore, and negotiations between the two sides appear to have hit an impasse. Kim’s offer, however, could provide a way to jump start talks, analysts say.

“What the United States needs to be looking for right now are genuine steps from the North Koreans that indicate a willingness to move the process forward. If North Korea is genuinely willing to close down Yongbyon and to allow in inspectors … those are just partial steps, but those are genuine steps forward,” said Michael Fuchs, a senior fellow at the Center for American Progress and former deputy assistant secretary of state for East Asian and Pacific affairs.

“The biggest outstanding question still remains — what price the North Koreans want to extract from the United States,” Fuchs said.

Shortly after the announcement, Trump called Wednesday’s developments “very exciting” on Twitter.

Standing side by side with Kim in Pyongyang, Moon expressed hope on Wednesday that talks would resume between North Korea and the US.

“They have continuously shown their trust towards one another and I hope there will be another summit between the two countries as soon as possible,” Moon said.

‘The era of no war’

Ahead of this week’s talks, it was expected that two leaders would continue to work to formally end to the Korean War, which ended in an armistice 65 years ago.

While a formal peace regime officially ending the Korean War would need buy in from the US and China — the other participants in the conflict — experts agree that there is nothing to stop the two Koreas declaring an end to the war themselves, or signing a bilateral peace treaty.

A big part of any negotiation to end the war would be the status of the thousands of US troops stationed in South Korea as part of the two countries’ alliance. The North has long seen the US military’s large footprint in South Korea as a direct threat.

Moon and Kim also teased a potential historic fourth meeting between the two leaders, this time in the South Korean capital. The signed agreement stated that Kim would travel to Seoul “as soon as possible,” something no North Korean leader has ever done. Kim’s father, Kim Jong Il, agreed to visit Seoul, but never followed through.

Kim and Moon also agreed to “normalize the Kaesong Industrial complex and Kumgang tourism project as soon as the conditions allow.”

Moon and his top advisers have consistently said they want to make summits and meetings a regular part of inter-Korean relations and see them as a helpful step in establishing a permanent peace.

“Chairman Kim and I share the history of having held hands like lovers and crossed the Military Demarcation Line together twice,” Moon said during a toast at a banquet Tuesday evening.

“The fact that the leaders of Koreas can meet without limit in time or place symbolically demonstrates that a new age of inter-Korean relations had arrived.