Deputy Assistant Secretary of Defense Laura Cooper testifies before the House Intelligence Committee on Capitol Hill in Washington, Wednesday, Nov. 20, 2019, during a public impeachment hearing of President Donald Trump's efforts to tie U.S. aid for Ukraine to investigations of his political opponents. (AP Photo/Andrew Harnik)
Video Ad Feedback
Hear Laura Cooper's full opening remarks to Congress
Deputy Assistant Secretary of Defense for Russia, Ukraine, and Eurasia Laura Cooper delivers her opening statements before the House Intelligence Committee conducting the impeachment inquiry into President Donald Trump.
12:57 • Source: CNN
Hear from key witnesses in the impeachment hearings 7 videos
Deputy Assistant Secretary of Defense Laura Cooper testifies before the House Intelligence Committee on Capitol Hill in Washington, Wednesday, Nov. 20, 2019, during a public impeachment hearing of President Donald Trump's efforts to tie U.S. aid for Ukraine to investigations of his political opponents. (AP Photo/Andrew Harnik)
Video Ad Feedback
Hear Laura Cooper's full opening remarks to Congress
12:57
Now playing
• Source: CNN
U.S. Ambassador to the European Union Gordon Sondland gives his opening statement as he testifies before the House Intelligence Committee on Capitol Hill in Washington, Wednesday, Nov. 20, 2019, during a public impeachment hearing of President Donald Trump's efforts to tie U.S. aid for Ukraine to investigations of his political opponents. (AP Photo/Susan Walsh)
Video Ad Feedback
Sondland: Yes, there was a quid pro quo
6:38
Now playing
• Source: CNN
House Intelligence Committee Chairman Adam Schiff of Calif., left, speaks as Rep. Devin Nunes, R-Calif., the ranking member on the committee, listens during the House Intelligence Committee on Capitol Hill in Washington, Wednesday, Nov. 13, 2019.
Video Ad Feedback
Schiff and Nunes see this in drastically different ways
4:27
Now playing
• Source: CNN
Top U.S. diplomat in Ukraine William Taylor testifies before the House Intelligence Committee on Capitol Hill in Washington, Wednesday, November 13, 2019, during the first public impeachment hearing of President Donald Trump's efforts to tie U.S. aid for Ukraine to investigations of his political opponents.
Video Ad Feedback
Taylor's statement was 40 mins. Hear the key moments
3:35
Now playing
• Source: CNN
Alexander Vindman, director for European affairs on the National Security Council, speaks during a House Intelligence Committee impeachment inquiry hearing in Washington, D.C., U.S., on Tuesday, Nov. 19, 2019. The committee plans to hear from eight witnesses in open hearings this week in the impeachment inquiry into President Donald Trump. Photographer: Andrew Harrer/Bloomberg via Getty Images
Video Ad Feedback
Lt. Col. Vindman: 'I will be fine for telling the truth'
2:23
Now playing
• Source: CNN
Former US Ambassador to the Ukraine Marie Yovanovitch testifies before the House Permanent Select Committee on Intelligence as part of the impeachment inquiry into US President Donald Trump, on Capitol Hill on November 15, 2019 in Washington DC.
Video Ad Feedback
Yovanovich's opening statement in 3 minutes
3:10
Now playing
• Source: CNN
WASHINGTON, DC - NOVEMBER 19: Jennifer Williams, adviser to Vice President Mike Pence for European and Russian affairs, and National Security Council Director for European Affairs Lt. Col. Alexander Vindman arrive to testify before the House Intelligence Committee in the Longworth House Office Building on Capitol Hill November 19, 2019 in Washington, DC. The committee heard testimony during the third day of open hearings in the impeachment inquiry against U.S. President Donald Trump, whom House Democrats say held back U.S. military aid for Ukraine while demanding it investigate his political rivals and the unfounded conspiracy theory that Ukrainians, not Russians, were behind the 2016 computer hacking of the Democratic National Committee. (Photo by Chip Somodevilla/Getty Images)
Video Ad Feedback
Pence aide says Ukraine call was 'political in nature'
2:22
Now playing
• Source: CNN