Following President Trump's second summit with North Korean leader Kim Jong Un, Sen. Bob Menendez said the president's strategy is putting the U.S. in a worse position.

Trump announced overnight that there’d be no deal in Hanoi, Vietnam because Kim was “unprepared” to fully denuclearize in exchange for the full removal of U.S.-led sanctions. Trump held a press conference where he said, “Sometimes you have to walk.”

"What we saw in Hanoi was amateur hour with nuclear weapons at stake, and the limits of reality TV diplomacy," Menendez, the ranking Democrat on the Senate Foreign Relations Committee, said on CNN Thursday.

He said there was a lack of strategic preparation to understand the "absolute North Korea position" and if that could move.

Menendez added that Trump may have squandered what leverage the U.S. has by helping Kim go from "pariah to accepted international leader."

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On "Outnumbered" Thursday, Fox News strategic analyst Gen. Jack Keane (Ret.) said he sees the second Trump-Kim summit as a positive step as opposed to a setback.

He explained that the U.S. has "staked out its claim" that it is committed to the denuclearization of the Korean Peninsula.

"We're in the beginning of this process. I think there'll be multiple meetings between the two, and we'll see where this goes," Keane said.

He predicted that Kim would be unwilling to give up his nuclear program for economic prosperity, but the North Korean leader may be willing to make a deal that ensures his regime stays in power in addition to economic prosperity.

"But we have to maintain a healthy skepticism about this whole thing."

Watch the "Outnumbered" discussion above.

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