Former White House adviser Dr. Sebastian Gorka praised President Trump after his summit with Kim Jong Un that went "beyond all expectations."

Trump and Kim signed a document on Tuesday stating that Pyongyang would work toward "complete denuclearization of the Korean Peninsula."

The historic agreement came after the two leaders held several meetings throughout the day.

"It really is history in the making. … The Korean War never ended, it was a cease-fire and now we have a chance to put that conflict to bed," Gorka said.

'Will You Give Up Your Nuclear Weapons?': CNN's Acosta Shouts Questions at Kim, Trump

.@SebGorka: “It really is history in the making… The Korean War never ended, it was a cease-fire and now we have a chance to put that conflict to bed.” pic.twitter.com/HnhmTvBFbW — Fox News (@FoxNews) June 12, 2018

Trump told Fox News’ Sean Hannity that he believes Kim will begin to work toward dismantling North Korea's nuclear program “virtually immediately.”

He also said that the North Korean leader agreed to destroy a “major” missile testing site.

Trump to 'Hannity': Kim Jong Un to start denuclearization 'virtually immediately' - via @JuddBerger https://t.co/MWp2DtXH5A — Fox News (@FoxNews) June 12, 2018

"You couldn't have a [more] stark difference between the last 25 years of handling this problem and the last 500 days," Gorka said.

Gorka agreed with Brian Kilmeade on "Fox & Friends" that the nuclear weapons agreement should be submitted as a verifiable treaty.

"I think that's the way to go, and it is such a good turn of fate that we have the former director of the CIA in the front seat at the State Department to make sure that this isn't just a piece of paper," he said, referring to CIA Director Mike Pompeo.

Hannity: Trump-Kim Summit as Historic as Reagan-Gorbachev in Reykjavik

Wallace: Definition of 'Denuclearization,' Timetable of Sanctions Relief Could Be Sticking Points

Former CIA Officer Urges Caution After Summit: North Korea Has 'Long History of Double Dealing'