Who is testifying?
Tuesday, first panel at 9 a.m. ET
Lt. Col. Alexander Vindman, the top Ukraine specialist on the National Security Council. Vindman listened to the July 25 telephone conversation in the White House Situation Room and reported his concerns about the president's mention of political investigations to the top NSC attorney, John Eisenberg. He said the attorney decided to move the record of the call onto a highly classified system that few could access.
Jennifer Williams, a foreign service aide detailed to Vice President Pence's office who listened in on the July 25 call between Trump and Zelenskiy.
Tuesday, second panel at 2:30 p.m. ET
Kurt Volker, the former special envoy to Ukraine, who along with Sondland and Energy Secretary Rick Perry was part of the "three amigos" tasked by the president to handle Ukraine policy. He was on the list of witnesses requested to appear by Republican members of the Intelligence Committee.
Tim Morrison, the former National Security Council aide who heard the July 25 call but in closed-door testimony told the committees conducting the impeachment inquiry that he didn't view the president's actions as illegal or inappropriate. Republicans say his testimony supports the president's position that there was nothing improper about the July 25 call, and they included him on a list of witnesses they asked the Intelligence Committee chairman, Rep. Adam Schiff, D-Calif., to call.
Wednesday, first panel at 9 a.m. ET
Gordon Sondland. Once a top donor to the president's inaugural committee, Sondland has faced intense scrutiny about his closed-door testimony after he sent the committee a three-page amendment reversing his initial account. In that addendum, Sondland said he personally told a top aide to Zelenskiy that the release of U.S. aid to Ukraine was linked to investigations.
Wednesday, second panel at 2:30 p.m. ET
Laura Cooper, a deputy assistant secretary at the Defense Department, who in closed-door testimony said that Ukrainians raised the administration's delay of $391 million in security assistance in August. She said that she spoke to Volker about the issue and that he told her he was working with Ukrainians to make a statement disavowing election interference.
David Hale, the undersecretary of state for political affairs at the State Department. He testified behind closed doors on Nov. 6, and Republicans asked for him to appear in the public hearings.
https://www.npr.org/2019/11/18/7793...eek-2-who-is-testifying-and-what-happens-next
Fiona Hill, formerly the top Russia specialist on the National Security Council, testified last month that she registered concerns about the parallel foreign policy channel that Giuliani was using to impact policy in Ukraine. She told investigators that she discussed her concerns with then-National Security Adviser John Bolton, who said that Giuliani was "a hand grenade that is going to blow everybody up."