Trump blames Cohen testimony for collapse of summit with Kim Jong

National security adviser John Bolton on Sunday defended President Trump's second summit with North Korean leader Kim Jong Un, saying the president was right not to make a deal that wasn't in the best interests of the United States. The summit ended abruptly, as both sides could not agree to a deal that would result in North Korea dismantling its nuclear weapons.

He was referring to his decision to leave Hanoi without making any deals with Kim over North Korea's nuclear ambitions. He accused Trump of being a liar, a racist and a con man, while also telling Republicans on the panel they would live to regret their support for the president. But Bolton's dodging response may be the most diplomatic thing the anti-diplomat has ever mustered; no doubt Trump will hear Bolton's words as praise for the "decision maker", brushing aside the parts where Bolton is unwilling to repeat Dear Leader's own conclusions. "Never done when a president is overseas".

North Korean leader Kim Jong-un and U.S. President Donald Trump take a walk after their first meeting at the Sofitel Legend Metropole Hanoi hotel, on February 28, 2019.

Bolton added, "So the president held firm to his view. It means that he accepts that's what Kim Jong Un said", Bolton said. "I don't view it as a failure at all when American national interests are protected".

According to senior USA officials, in the week leading up to the Hanoi summit the North Koreans had demanded the lifting of effectively all the UN Security Council economic sanctions imposed on Pyongyang since March 2016.

"It was the sanctions that brought the North Koreans to the table".

Bolton repeated the USA position that it would help North Korea's economic progress if it committed to complete denuclearization and closing its chemical and biological weapons programs. In a press conference that followed, Trump said he was forced to call off the signing of an agreement due to North Korea's demands for all sanctions to be lifted.

The Ohio student fell into a coma in a North Korean prison and died shortly after he was sent home two years ago.

As Trump wrapped up his trip to the summit last week, he complained that Democrats had scheduled the hearing at the same time as his negotiations.

Congressman Adam Schiff, chairman of the House Intelligence Committee, summarised the summit as a "spectacular failure" made all the worse by Trump's comments on "murder of an American citizen, Otto Warmbier".

"This the result of a president who is not prepared for these kind of negotiations, a staff that is not well-prepared and that is essentially flying by the seat of its trousers", Schiff said on Face the Nation. The Trump administration announced this weekend that they would be ending the long-held joint U.S.

Bolton spoke on "Fox News Sunday", CNN's "State of the Union" and CBS's "Face the Nation".

Bolton was touring the Sunday political shows the morning after the USA and South Korea announced an end to key annual large-scale military exercises.

And Bolton said Trump has "turned traditional diplomacy on its head, and after all in the case of North Korea, why not?"

Under U.S. laws, Trump would need to go through an involved process to soften U.S. unilateral sanctions against the North, which would put South Korean companies doing business in the North under the threat of U.S. boycotts.