Donald Trump’s announcement that he would meet with North Korean leader Kim Jong-un did not impress TV hosts Mika Brzezinski and Joe Scarborough, who wondered aloud how the US president could negotiate with a foreign leader if he “can’t even make a deal with a porn star”.

The Morning Joe hosts slammed Mr Trump the day after he announced the historic meeting with Mr Kim. The meeting, scheduled for May, would be the first time a sitting US president met with a North Korean leader. It came as Mr Kim promised to halt all nuclear testing and expressed interested in denuclearization.

Still, Ms Brzezinski and Mr Scarborough were not convinced Mr Trump could secure any meaningful agreement from the meeting.

“We’ve been seeing this guy on the national stage now long enough to know that so often it’s just all talk, it’s all bluster,” Mr Scarborough said. “He talks about the art of the deal; the deal never comes through.”

“He can’t even make a deal with a porn star,” Ms Brzezinski added, referring to adult film star Stormy Daniels.

North Korea Military Parade Show all 6 1 /6 North Korea Military Parade North Korea Military Parade In this image made from video released by KRT on Feb. 8, 2018, a military parade is held at Kim Il Sung Square in Pyongyang, Thursday, Feb. 8 2018, just one day before South Korea holds the opening ceremony for the Pyeongchang Winter Olympics. (KRT via AP Photo) AP North Korea Military Parade This screen grab taken from North Korea's KCTV on February 8, 2018 shows members of North Korea's military taking part in a parade, with missiles being displayed, in Kim Il Sung Square in Pyongyang. North Korea staged a military parade in Pyongyang on February 8 to mark the 70th anniversary of its armed forces, in a show of strength just a day before the Pyeongchang 2018 Winter Olympic Games open in the South. / AFP PHOTO / KCTV / KCTV / -----EDITORS NOTE --- RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / KCTV" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - NO ARCHIVESKCTV/AFP/Getty Images AFP/Getty Images North Korea Military Parade In this image made from video released by KRT, North Korean soldiers march during a military parade in Pyongyang, Thursday, Feb. 8 2018. North Korea held a military parade and rally on Kim Il Sung Square on Thursday, just one day before South Korea holds the opening ceremony for the Pyeongchang Winter Olympics. (KRT via AP Photo) AP North Korea Military Parade In this image made from video released by KRT on Feb. 8, 2018, North Korean leader Kim Jong Un, right, inspects honor guards, along with his wife Ri Sol Ju, center, during a military parade in Pyongyang, Thursday, Feb. 8 2018. North Korea held a military parade and rally on Kim Il Sung Square on Thursday, just one day before South Korea holds the opening ceremony for the Pyeongchang Winter Olympics. (KRT via AP Photo) AP North Korea Military Parade In this image made from video released by KRT on Feb. 8, 2018, North Korean leader Kim Jong Un, center, watches the military parade in Pyongyang, Thursday, Feb. 8 2018. North Korea held a military parade and rally on Kim Il Sung Square on Thursday, just one day before South Korea holds the opening ceremony for the Pyeongchang Winter Olympics. (KRT via AP Photo) AP North Korea Military Parade This screen grab taken from North Korea's KCTV on February 8, 2018 shows North Korean leader Kim Jong Un speaking during a military parade in Kim Il Sung Square in Pyongyang. North Korea staged a military parade in Pyongyang on February 8 to mark the 70th anniversary of its armed forces, in a show of strength just a day before the Pyeongchang 2018 Winter Olympic Games open in the South. / AFP PHOTO / KCTV / KCTV / -----EDITORS NOTE --- RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / KCTV" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS - NO ARCHIVESKCTV/AFP/Getty Images AFP/Getty Images

Ms Daniels claims she had an affair with the president in 2006, one year after he married his wife, Melania. The actress recently sued the president in an attempt to invalidate a nondisclosure agreement she says his lawyers drew up to silence her. Mr Trump denies the affair occurred.

“His lawyer can’t even draft a competent deal to keep a porn star quiet,” Mr Scarborough said on Friday. “So how is he going to keep the North Koreans from getting nuclear weapons?”

Trump announces some of the 'largest sanctions' on North Korea at CPAC 2018

Administration officials have stressed that the meeting between Mr Trump and Mr Kim is not a negotiation, but simply a chance for the two leaders to talk. Mr Trump himself has scoffed at the idea of talking with Mr Kim, and proposed more dramatic solutions, like raining “fire and fury” on the country.

“Presidents and their administrations have been talking to North Korea for 25 years, agreements made and massive amounts of money paid,” he tweeted in October. “Hasn't worked, agreements violated before the ink was dry, makings fools of U.S. negotiators.”

He added: “Sorry, but only one thing will work!”

Mr Trump was more upbeat on Thursday, announcing that his meeting with Mr Kim was being planned and “great progress” was being made.