A top US official has said a phone call the US president made to ask Ukraine to investigate political rivals was “improper”.
Lt Col Alexander Vindman was testifying before the US House intelligence committee as part of the impeachment inquiry into Donald Trump.
He said Mr Trump had made inappropriate political demands of his Ukrainian counterpart during a July phone call.
The inquiry is investigating whether presidential power was abused.
It seeks to establish whether Mr Trump withheld US military aid to Ukraine in order to pressure the country’s new leader, Volodymyr Zelensky, into announcing a corruption inquiry into Joe Biden, Mr Trump’s Democratic rival for the US presidency.
What did Vindman say?
The White House National Security Council (NSC)’s top Ukraine expert testified that he had been concerned by the president’s demands to investigate Mr Biden.