Mark Wilson/Getty Images Copyright: Mark Wilson/Getty Images

That's all from Ambassador to the EU Gordon Sondland but the impeachment probe marches on.

Trump's notes as he spoke to reporters (below) show the president's major takeaway: "No quid pro quo."

Later today, the congressional committee will reconvene to hear from Laura Cooper, the deputy assistant secretary of defense, and David Hale, undersecretary of state for political affairs.

In her closed-door testimony earlier this month, Cooper said Trump had directed the suspension of military aid to Ukraine over corruption concerns.

In his prior testimony, Hale said state department officials regarded the removal of ambassador to Ukraine Marie Yavonovitch as questionable. Yavonovitch testified last week.

Tomorrow, Trump's former Russia adviser Dr Fiona Hill will appear before the House panel.