John Brennan, the former CIA director, said losing Sue Gordon and Dan Coats on the same day is "basically decapitating the intelligence community."
"It's more about protecting Trump than America," Mary Anne Marsh said.
The president named Texas Republican Ratcliffe as his choice to replace outgoing Director of National Intelligence Dan Coats.
"If he's working towards a deal, as you say, it's a deal we don't know about," John Brennan said. "He basically said he wants denuclearization. That is not going to happen."
The North Korean leader also reportedly commanded troops to be at "high alert posture" and to prepare to "defend the political sovereignty and economic self-sustenance of the country."
"I didn't think this summit went well for the president at all, more importantly for the U.S. national security," Mike Rogers, a former Republican congressman said.
"North Korea's diplomacy has taken an unprecedented tactical course, which is tailor-made for Trump," warned Thae Yong Ho, a former North Korean deputy ambassador to Britain who defected in 2016.
"There ain't no learning in the second kick of the mule here," said a former deputy director of the CIA's Counterterrorism Center.
"People need to stop saying that Donald Trump is taking a different position than all of his intel chiefs and from the United States military," "Morning Joe" host Joe Scarborough said.
"I worry that it sends a strong message to our adversaries out there, particularly Russia and China, that there are huge gaps remaining in the national security decision-making apparatus in this country," John Kirby said.
"Israeli strikes that result in Iranian casualties increase the likelihood of Iranian conventional retaliation against Israel," said Director of National Intelligence Dan Coats.
"We continue to assess that Iran is not currently undertaking the key nuclear weapons-development activities we judge necessary to produce a nuclear device," Dan Coats said.
The director of national intelligence's interview Thursday could reportedly be seen as a betrayal of the president.
Gina Haspel has been accused of being involved in controversial interrogation methods.
The NSA director and National Intelligence Director Dan Coats responded to media reports that Trump had tried to interfere with the FBI's Russia investigation.
The request comes as some Republican lawmakers, many of whom have stridently defended U.S. surveillance programs in the past, express sudden interest in considering additional privacy safeguards.
"I think this is something that needs to be investigated and addressed," former Republican Senator Dan Coats told the Senate Intelligence Committee during his confirmation hearing to be the top U.S. intelligence official.
Coats, 73, is a traditional conservative from Indiana who just finished a six-year term in the U.S. Senate. He was also a U.S. ambassador to Germany for Republican President George W. Bush.