Former acting Attorney General Sally Yates said in an interview aired Tuesday that "there is certainly a criminal statute that was implicated by" ousted national security adviser Michael Flynn's "conduct."
Yates, who fired after she refused to defend Trump's controversial travel ban on seven Muslim-majority countries, warned White House counsel Donald McGahn that Russia could potentially blackmail Flynn for contacts he had with Russian Ambassador Sergey Kislyak.
Those warnings went mostly ignored, as Flynn stayed on as national security adviser for the next 18 days until a bombshell Washington Post report stated that Flynn had misled Vice President Mike Pence about his communications with Kislyak. Last week, Yates testified before a Senate Judiciary subcommittee hearing on Russian interference in the 2016 presidential election and reiterated that she believed Flynn could have been blackmailed.
RELATED: A look at former acting Attorney General Sally Yates
Sally Yates, former acting U.S. attorney general, swears in to a Senate Judiciary Subcommittee on Crime and Terrorism hearing in Washington, D.C., U.S., on Monday, May 8, 2017. Yates said she warned the White House's top lawyer in late January that then-National Security Adviser Michael Flynn had misled Vice President Mike Pence and others about contacts with Russian officials and was potentially subject to blackmail by them. Photographer: Andrew Harrer/Bloomberg via Getty Images
Sen. Lindsey Graham (R-SC) greets former Acting Attorney General Sally Yates after she testified about potential Russian interference in the presidential election before the Senate Judiciary Committee on Capitol Hill Washington, D.C., U.S. May 8, 2017. REUTERS/Aaron P. Bernstein
U.S. Deputy Attorney General Sally Quillian Yates testifies during a Senate Judiciary Committee hearing on "Going Dark: Encryption, Technology, and the Balance Between Public Safety and Privacy" in Washington July 8, 2015.
U.S. President Barack Obama attends a meeting with FBI Director James Comey (C), Deputy Attorney General Sally Yates (R) along with DHS Secretary Charles Johnson (not pictured) and NCTC Director Nicholas Rasmussen (not pictured) at the Oval Office of the White House in Washington, U.S., June 13, 2016.
Deputy Attorney General Sally Q. Yates speaks during a press conference at the Department of Justice on June 28, 2016 in Washington, DC. Volkswagen has agreed to nearly $15 billion in a settlement over emissions cheating on its diesel vehicles.
(Photo by Pete Marovich/Getty Images)
U.S. Deputy Attorney General Sally Quillian Yates (L) and FBI Director James Comey are sworn in to testify at a Senate Judiciary Committee hearing on "Going Dark: Encryption, Technology, and the Balance Between Public Safety and Privacy" in Washington July 8, 2015.
Former Deputy Attorney General Sally Yates arrives to testify before a Senate Judiciary Committee hearing on ?Russian interference in the 2016 U.S. election? on Capitol Hill in Washington, U .S., May 8, 2017. REUTERS/Jim Bourg
Former acting Attorney General Sally Yates (2nd R) and former Director of National Intelligence James Clapper (L) prepare to testify on May 8, 2017, before the US Senate Judiciary Committee on Capitol Hill in Washington, DC. / AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
Deputy Attorney General Sally Q. Yates (L) speaks alongside FBI Director James Comey (2L) and Chuck Rosenberg (C), acting administrator of the Drug Enforcement Administration (DEA) as they attend a new Implicit Bias Training program at the Department of Justice in Washington, DC, June 28, 2016.
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Deputy Attorney General Sally Quillian Yates during a Senate Judiciary Committee hearing on Going Dark and data encryption in Washington, USA on JULY 8, 2015.
(Photo by Samuel Corum/Anadolu Agency/Getty Images)
Flanked by Environmental Protection Agency Administrator Gina McCarthy and Federal Trade Commission Chairwoman Edith Ramirez , Deputy Attorney General Sally Q. Yates speaks during a press conference at the Department of Justice on June 28, 2016 in Washington, DC. Volkswagen has agreed to nearly $15 billion in a settlement over emissions cheating on its diesel vehicles.
(Photo by Pete Marovich/Getty Images)
U.S. Attorney General Loretta Lynch (2nd L) delivers closing remarks to the Justice Department Summit on Violence Crime Reduction with Deputy Attorney General Sally Quillian Yates (3rd L) and other Justice Department officials at the Washington Plaza Hotel October 7, 2015 in Washington, DC. Lynch invited mayors and police chiefs from 20 cities and other federal officials to the conference to discuss the root causes of crime and strategies for reducing it.
(Photo by Chip Somodevilla/Getty Images)
Deputy Attorney General Sally Yates, in her office at the Justice Department, May 15, 2015, in Washington, DC. Yates, who was confirmed by the Senate yesterday, is a former career prosecutor from Atlanta.
(Photo by Evelyn Hockstein/For The Washington Post via Getty Images)
WASHINGTON, DC - MAY 08: Former acting U.S. Attorney General Sally Yates (R) and Former Director of National Intelligence James Clapper testify before the Senate Judicary Committee's Subcommittee on Crime and Terrorism in the Hart Senate Office Building on Capitol Hill May 8, 2017 in Washington, DC. Before being fired by U.S. President Donald Trump, Yates had warned the White House about contacts between former National Security Advisor Michael Flynn and Russia that might make him vulnerable to blackmail. (Photo by Chip Somodevilla/Getty Images)
Former Deputy Attorney General Sally Yates is sworn in prior to testifying before a Senate Judiciary Committee hearing on ?Russian interference in the 2016 U.S. election? on Capitol Hill in Washington, U .S., May 8, 2017. REUTERS/Jim Bourg TPX IMAGES OF THE DAY
Former Acting Attorney General Sally Yates and former Director of National Intelligence James Clapper are sworn in before the Senate Judiciary Committee on Capitol Hill, Washington, D.C., U.S. May 8, 2017. REUTERS/Aaron P. Bernstein
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In the interview set to air Tuesday night, the first clips from which CNN published Tuesday morning, Yates did not expand upon the criminal statute she suggested had been implicated by Flynn's conduct. She did express surprise that the White House waited 18 days before firing Flynn and that Flynn continued to sit in on meetings and calls with foreign dignitaries, including Russian leaders.
"I think that this was a serious compromise situation, that the Russians had real leverage," she told CNN. "He also had lied to the vice president of the United States. Whether he's fired or not is a decision for the president of the United States to make. But, doesn't seem like that's a person should be sitting in the national security adviser position."
She said she didn't "how the White House reached the conclusion that there was no legal issue," but "it certainly wasn't from my discussion with them."
"We expected the White House to act," she said.
Yates also denied that she was the source of the leaks to multiple media outlets about Flynn, saying she "absolutely" was not the source and had never leaked classified information to the media.
"I did not and I would not leak classified information," she said.
Cooper asked Yates for her thoughts on Trump's tweet from the day of her Senate testimony when he asked senators to "ask Sally Yates, under oath, if she knows how classified information got into the newspapers soon after she explained it to" the White House counsel.
"There have been a number of tweets that have given me pause," she said, declining to go further into her feelings on the subject.
RELATED: Key players in Trump-Russia connection allegations
Key players in Trump-Russia connection allegations
Key players in Trump-Russia connection allegations
Paul Manafort signed on as Donald Trump's campaign manager in March 2016. A longtime Republican strategist and beltway operative, Manafort had previously served as an adviser to former Ukrainian president Viktor Yanukovich -- a pro-Russia leader who was violently ousted in 2014. Manafort resigned from his campaign position in August 2016 amid questions over his lobbying history in Ukraine for an administration supportive of Russia. The former campaign manager reportedly remained in Trump's circle during the post-election transition period.
Gen. Michael Flynn was named President Trump's national security adviser in November of 2016. Flynn reportedly met and spoke with Russian Ambassador Sergey Kislyak in December, at one point discussing sanctions. Flynn originally told Vice President Pence he did not discuss sanctions -- a point the Department of Justice said made the national security adviser subject to blackmail. Flynn resigned from his position in February.
Outgoing Russian ambassador to the United States Sergey Kislyak is the Russian official U.S. attorney general Jeff Sessions -- communication Sessions denied during his Senate committee hearing testimony.
R. James Woolsey
Woolsey, the former director of the Central Intelligence Agency (CIA), has cooperated with Mueller's investigation and worked with Michael Flynn and was present at a meeting where they discussed removing the controversial Turkish Muslim cleric Fetullah Gulen from US soil.
(Christopher Goodney/Bloomberg via Getty Images)
Stone is a longtime Republican political consultant who served as a campaign adviser to Trump who continued to talk with the then-GOP candidate after stepping away from his adviser role. Stone claimed last year that he had knowledge of the planned WikiLeaks release of emails pertaining to Hillary Clinton and the Democratic National Committee. Stone recently admitted to speaking via direct message with "Guccifer 2.0" -- an online entity U.S. officials believe is tied to Russia. Stone says the correspondence was “completely innocuous.”
Former U.S. senator Jeff Sessions from Alabama joined Trump's campaign as a foreign policy adviser in February 2016. Sessions was nominated to be U.S. attorney general by President Trump and was then confirmed by the Senate. Reports then emerged that Sessions had spoken twice with Sergey Kislyak while he was senator -- a fact that he left out of his Senate hearing testimony. Instead, he said in writing that he had not communicated with any Russian officials during the campaign season. Sessions defended himself saying he had spoken with Kislyak specifically in a senate capacity.
Russian President Vladimir Putin
The American intelligence community accused Putin in Jan. 2017 of ordering a campaign to undermine trust in the American electoral process, developing a clear preference for Trump as president. "We assess Russian President Vladimir Putin ordered an influence campaign in 2016 aimed at the US presidential election. Russia's goals were to undermine public faith in the US democratic process, denigrate Secretary Clinton, and harm her electability and potential presidency. We further assess Putin and the Russian Government developed a clear preference for President-elect Trump," the report read.
Comey publicly confirmed in March an FBI inquiry into Russia's involvement in the 2016 election. “The F.B.I., as part of our counterintelligence effort, is investigating the Russian government’s efforts to interfere in the 2016 president election,” Comey stated.
Page worked for Merrill Lynch as an investment banker out of their Moscow office for three years before joining Trump's campaign as a foreign policy adviser. During his time with Merrill Lynch, Page advised transactions for two major Russian entities. Page has called Washington "hypocritical" for focusing on corruption and democratization in addressing U.S. relations with Russia. While Page is someone Trump camp has seemingly tried to distance itself from, Page recently said he has made frequent visits to Trump Tower.
Before Gordon joined the Trump campaign as a national security adviser in March 2016, he served as a Pentagon spokesman from 2005 through 2009. Like others involved in Trump-Russia allegations, Gordon met with ambassador Kislyak in July at the Republican National Convention, but has since denied any wrongdoing in their conversation. He advocated for and worked to revise the RNC language on and position toward Ukraine relations, so it was more friendly toward Russia's dealings in the country.