READ: Transcript of testimony by top US diplomat in Ukraine William Taylor

READ: Transcript of testimony by top US diplomat in Ukraine William Taylor
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House Democrats on Wednesday released the transcript of William Taylor's closed-door testimony in the impeachment probe into President TrumpDonald John TrumpTrump rails against impeachment in speech to Texas farmers Trump administration planning to crack down on 'birth tourism': report George Conway on Trump adding Dershowitz, Starr to legal team: 'Hard to see how either could help' MORE.

Taylor, the top U.S. diplomat in Ukraine, was the first official to testify that a quid pro quo existed, with the Trump administration withholding Ukrainian military aid while requesting that Ukraine launch politically motivated investigations into interference in the 2016 election and former Vice President Joe BidenJoe BidenNYT editorial board endorses Warren, Klobuchar for Democratic nomination for president Trump rails against impeachment in speech to Texas farmers Biden breaks away from 2020 pack in South Carolina MORE and his son Hunter.

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"That was my clear understanding, security assistance money would not come until the President committed to pursue the investigation," Taylor said in the testimony, referring to Ukrainian President Volodymyr Zelensky.

Taylor is also scheduled to testify publicly next week, as the impeachment probe enters its next phase. Democrats are releasing transcripts from the closed-door phase of their probe in batches this week.

Read Taylor's full testimony transcript here or below: