The public will hear testimony Tuesday from Lt. Col. Alexander Vindman, the top Ukraine specialist on the National Security Council. State Department aide Jennifer Williams will also testify.
Both witnesses were listening to a July 25 phone call between President Trump and the president of Ukraine.
Here & Now‘s Robin Young speaks with Claudia Grisales (@cgrisales), congressional reporter for NPR.
This article was originally published on WBUR.org.
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