One of the negotiators who worked to secure Otto Warmbier's release from prison in North Korea broke down the keys to President Trump's second meeting with Kim Jong Un.

Mickey Bergman is the vice president of the Richardson Center for Global Engagement, which promotes diplomacy with countries and communities not usually open to more formal diplomatic channels.

Bergman helped negotiate the framework for talks to release Warmbier, a U.S. student who spent 17 months in a North Korean prison. Warmbier was returned to the U.S. in a vegetative state in June 2017 but passed away several days later.

On "Fox & Friends" Wednesday, Bergman explained that as part of his work with the Richardson Center, he has been engaging with North Korea for many years.

"Building that trust and that relationship -- not that dissimilar with what Trump is doing with Kim -- is the key to be able to negotiate," he said.

He added that Trump needs to walk away from the summit with two things: a framework for the negotiating process and a pathway to bring back the remains of U.S. servicemen who served in the Korean War.

Bergman said he would advise Trump to hold "regular summits" with Kim moving forward, as it appears Trump is the North Korean leader's preferred negotiator.

Watch the "Fox & Friends" clip above, and stay with Fox News Channel for LIVE coverage of the Trump-Kim summit.

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