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AP source: Second US official in Kyiv heard Trump call
By Michael Biesecker, Desmond Butler & Matthew Lee
Timeline: The curious release of military aid to Ukraine
Analysis | Who is Marie Yovanovitch, and why does her public testimony matter?
By Amber Phillips
All coverage
Impeachment: Donald Trump is using Facebook ads to fight back
By Emily Stewart & Rani Molla
'He does nothing without a quid pro quo' - POLITICO
By Daniel Lippman
Russian spies likely intercepted ambassador's cell phone call with Trump
By Zachary Cohen & Kevin Collier
New revelations from first public hearings paint damning portrait of Trump
By Stephen Collinson