Marie Yovanovitch, former U.S. ambassador to Ukraine, testifies before a House Intelligence Committee hearing as part of the impeachment inquiry into U.S. President Donald Trump on Capitol Hill in Washington, U.S., November 15, 2019.
Credit: REUTERS/Jonathan Ernst.
The former U.S. ambassador to Ukraine says she was the target of a smear campaign. As she testifies, President Trump attacks her on Twitter.