FILE - In this Feb. 1, 2017 file photo, National Security Adviser Michael Flynn speaks during the daily news briefing at the White House, in Washington. A lawyer for former national security adviser Flynn has told President Donald Trump's legal team that they are no longer communicating with them about special counsel Robert Mueller's investigation into Russian election interference, according to a person familiar with the decision who spoke to The Associated Press on condition of anonymity. (AP Photo/Carolyn Kaster, File)
Video Ad Feedback
Cooper: Flynn's guilty plea contradicts WH
Anderson Cooper 360
CNN's Anderson Cooper takes a look at the White House's repeated past denials of any contact with Russia in light of Michael Flynn's recent guilty plea.
7:14 • Source: CNN
Retired Lt. General Michael Flynn 15 videos
FILE - In this Feb. 1, 2017 file photo, National Security Adviser Michael Flynn speaks during the daily news briefing at the White House, in Washington. A lawyer for former national security adviser Flynn has told President Donald Trump's legal team that they are no longer communicating with them about special counsel Robert Mueller's investigation into Russian election interference, according to a person familiar with the decision who spoke to The Associated Press on condition of anonymity. (AP Photo/Carolyn Kaster, File)
Video Ad Feedback
Cooper: Flynn's guilty plea contradicts WH
7:14
Now playing
• Source: CNN
Paul Manafort President Donald Trump Michael Flynn
Video Ad Feedback
NYT: Trump lawyer floated Flynn, Manafort pardons
2:20
Now playing
• Source: CNN
White House Press Secretary Sarah Sanders speaks during the daily briefing in the Brady Briefing Room of the White House on March 27, 2018 in Washington, DC. (MANDEL NGAN/AFP/Getty Images)
Video Ad Feedback
White House dodges questions over pardons
2:34
Now playing
• Source: CNN
FILE - In this Feb. 1, 2017 file photo, National Security Adviser Michael Flynn speaks during the daily news briefing at the White House, in Washington. A lawyer for former national security adviser Flynn has told President Donald Trump's legal team that they are no longer communicating with them about special counsel Robert Mueller's investigation into Russian election interference, according to a person familiar with the decision who spoke to The Associated Press on condition of anonymity. (AP Photo/Carolyn Kaster, File)
Video Ad Feedback
Trump's praise of Michael Flynn over the years
1:52
Now playing
• Source: CNN
Trump 12-4-2017
Video Ad Feedback
Trump compares Flynn to Hillary Clinton
0:42
Now playing
• Source: CNN
John Dowd, attorney for Raj Rajaratnam, founder of Galleon Group LLC, arrives at federal court for a court conference in New York, U.S., on Wednesday, Feb. 17, 2010. Rajaratnam's lawyers are seeking an "unfair strategic advantage" by bringing an insider-trading lawsuit to trial before the criminal case against the hedge fund founder, U.S. prosecutors told a judge. Photographer: Jin Lee/Bloomberg via Getty Images
Video Ad Feedback
Trump's lawyer says he wrote Flynn tweet
1:48
Now playing
• Source: CNN
FILE - In this Feb. 1, 2017 file photo, National Security Adviser Michael Flynn speaks during the daily news briefing at the White House, in Washington. A lawyer for former national security adviser Flynn has told President Donald Trump's legal team that they are no longer communicating with them about special counsel Robert Mueller's investigation into Russian election interference, according to a person familiar with the decision who spoke to The Associated Press on condition of anonymity. (AP Photo/Carolyn Kaster, File)
Video Ad Feedback
The timeline of Flynn's contacts with Russia
1:54
Now playing
• Source: CNN
WASHINGTON, DC - JANUARY 20: Retired Army Lt. General Michael Flynn arrives for the Presidential Inauguration of Donald Trump at the US Capitol on January 20, 2017 in Washington, DC. Flynn is appointed National Security Advisor to Trump. Donald J. Trump will become the 45th president of the United States today. (Photo by Saul Loeb - Pool/Getty Images)
Video Ad Feedback
Source: Flynn wanted Russian sanctions removed
2:15
Now playing
• Source: CNN
20171208 Mar a lago timeline T1 flynn trump collage
Video Ad Feedback
Crucial 48 hours at Mar-a-Lago may hold answers
1:30
Now playing
• Source: CNN
Trump talking/ media availability
Video Ad Feedback
Trump responds to questions about Flynn plea
1:47
Now playing
• Source: CNN
NEW YORK, NY - NOVEMBER 17: Retired Lt. Gen. Michael Flynn gestures as he arrives at Trump Tower, November 17, 2016 in New York City. President-elect Donald Trump and his transition team are in the process of filling cabinet and high level positions for the new administration. (Photo by Drew Angerer/Getty Images)
Video Ad Feedback
Michael Flynn in 60 seconds
1:59
Now playing
• Source: CNN
Former Trump national security adviser Michael Flynn, center, arrives at federal court in Washington, Friday, Dec. 1, 2017. Court documents show Flynn, an early and vocal supporter on the campaign trail of President Donald Trump whose business dealings and foreign interactions made him a central focus of Mueller's investigation, will admit to lying about his conversations with Russia's ambassador to the United States during the transition period before Trump's inauguration. (AP Photo/Susan Walsh)
Video Ad Feedback
Flynn says he's cooperating with Mueller
1:02
Now playing
• Source: CNN
NEW YORK, NY - DECEMBER 12: Retired Lt. Gen. Michael Flynn, President-elect Donald Trump's choice for National Security Advisor, waits for an elevator in the lobby at Trump Tower, December 12, 2016 in New York City. President-elect Donald Trump and his transition team are in the process of filling cabinet and other high level positions for the new administration. (Photo by Drew Angerer/Getty Images)
Video Ad Feedback
Flynn lawyers cut off talks with Trump team
2:32
Now playing
• Source: CNN
WASHINGTON, DC: National Security Adviser Michael Flynn listens to remarks at the National Prayer Breakfast where U.S. President Donald Trump spoke February 2, 2017 in Washington, DC. (Win McNamee/Getty Images)
Video Ad Feedback
Sources: Russians bragged about using Flynn
3:06
Now playing
• Source: CNN
NEW YORK, NY - NOVEMBER 29: General Mike Flynn, Donald Trump's new national security adviser, arrives at Trump Tower on November 29, 2016 in New York City. President-elect Donald Trump and his transition team are in the process of filling cabinet and other high level positions for the new administration. (Photo by Spencer Platt/Getty Images)
Video Ad Feedback
What did Mike Pence know about Flynn?
3:11
Now playing
• Source: CNN