Marie Yovanovitch, the former U.S. ambassador to Ukraine, testified that she had no firsthand knowledge of the July 25 phone call between Trump Ukrainian President Zelensky as well as no direct knowledge about any withholding of military aid—the center points of the Democrat-run impeachment inquiry.
House Democrats called Yovanovitch to testify amid their impeachment inquiry against Trump. They alleged that Trump abused his power by withholding military aid to Ukraine in exchange for investigations into Joe and Hunter Biden, which Trump denies.