Factbox: Key witness testimony at heart of Democrats' drive to impeach Trump - Reuters

With Democrats in the U.S. House of Representatives moving toward possibly impeaching Trump, who urged Ukraine’s president in a July 25 phone call to carry out the investigations, here are highlights of testimony already given by key witnesses in televised hearings: https://www.reuters.com/article/us-usa-trump-impeachment-highlights-fact/factbox-key-witness-testimony-at-heart-of-democrats-drive-to-impeach-trump-idUSKBN1Y81EE