Lt. Col. Alexander Vindman, the top Ukraine expert on the National Security Council, gave public testimony of his alarm at what he heard during President Trump’s July phone call with the leader of Ukraine. Appearing in his Army dress uniform trimmed with military ribbons, Colonel Vindman spoke of himself as a patriot, an account that Democrats echoed. The president’s Republican allies, however, told a different story.

“The Latest” is a new series on the impeachment inquiry, from the team behind “The Daily.” You can find more information about it here.

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Four witnesses will appear in tomorrow’s public hearings — three of whom listened directly to the July phone call between President Trump and Ukraine’s president that is now at the center of the impeachment inquiry. Plus, impeachment investigators are looking into whether Mr. Trump lied to Robert S. Mueller III.

“The Latest” is a new series on the impeachment inquiry, from the team behind “The Daily.” You can find more information about it here.

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Marie Yovanovitch, who was ousted as the ambassador to Ukraine on President Trump’s orders, came before the House Intelligence Committee on the second day of public hearings in the impeachment inquiry. At the very moment she was testifying about feeling threatened by the president, the president was tweeting about her.

“The Latest” is a new series on the impeachment inquiry, from the team behind “The Daily.” You can find more information about it here.

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We’ve been hearing a lot about the “quid pro quo.” But this week, Democrats started using a new term, one that shows up in the impeachment clause of the Constitution, to describe President Trump’s actions toward Ukraine. Republicans started using it, too — to reject it.

“The Latest” is a new series on the impeachment inquiry, from the team behind “The Daily.” You can find more information about it here.

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On the first day of public hearings in the Trump impeachment inquiry, lawmakers questioned two diplomats, and laid out two competing narratives about the investigation. This is the first episode in our new series on the impeachment inquiry. For more information, visit nytimes.com/thedaily.

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