yovanovitch. pulled from her post in may. >> ambassador yovanovitch is an important witness for the democrats. she could demonstrate this campaign led by the president's personal attorney giuliani to push her out and to push for the investigations into joe biden. their goal in having her testify was to detail how this ran counter to the national interest of the united states. >> in a detailed opening statement, yovanovitch out lined both confusion and concern. about her removal. >> ukrainians who prefer to play by the old corrupt rules sought to remove me. what continues to amaze me is that they found americans willing to partner with them and working together they succeeded. >> less than 90 minutes into the hearing a interruption from chairman schiff. >> as we sit here testifying the president is attacking you on twitter. what effect does that have on