Lt. Col. Alexander Vindman arrives Tuesday to testify before the House Intelligence Committee on Capitol Hill in Washington during a public impeachment hearing of President Donald Trump's efforts to tie U.S. aid for Ukraine to investigations of his political opponents. Credit: Julio Cortez | AP

The House Intelligence Committee continued its public hearings in the Trump impeachment inquiry on Tuesday, with testimony Lt. Col. Alexander Vindman, director for European affairs at the National Security Council, and Jennifer Williams, special adviser for Europe and Russia in the Office of the Vice President.

Vindman is the first witness to testify who listened in on President Donald Trump’s April and July phone calls with Ukrainian President Volodymyr Zelensky. In the July call, Trump pushed for Zelensky to investigate potential 2020 contender Joe Biden and his son Hunter Biden, who previously sat on the board of a Ukrainian gas firm.

The hearing begins at 9 a.m.

— You can read more about Vindman’s closed-door testimony here.

— You can read a transcript of Williams’ testimony here.

— You can read the newly-released transcripts of testimony from David Holmes and David Hale here.

— You can read about last week’s public hearings here and here.

— You can read about the rough transcript of Trump’s April phone call here.

— You can read a rough transcript of Trump’s July phone call here.

— You can read the whistleblower complaint that prompted the inquiry here.