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White House budget official lays out unusual process in freeze of Ukraine aid for impeachment investigators
By Veronica Stracqualursi, Manu Raju & Lauren Fox
Pence aide testified that Trump's efforts to pressure Ukraine were 'inappropriate'
By Andrew Desiderio & Melanie Zanona
With a Tweet, Trump Upends Republican Strategy for Dealing With Yovanovitch (Published 2019)
By Michael D. Shear
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Trump's View of Ukraine as Corrupt Took Shape Early
By Vivian Salama & Rebecca Ballhaus
Why Trump Attacked Marie Yovanovitch
By Molly Jong-Fast
How a Trump tweet shook impeachment hearing
By Anthony Zurcher
Impeachment witness provides firsthand account of hearing Trump demand 'investigation' of Bidens by Ukraine
By Rachael Bade, Karoun Demirjian & Toluse Olorunnipa
Witness overheard US ambassador tell Trump that Ukraine would investigate Biden
By Jeremy Herb & Manu Raju
'Witness intimidation in real-time': Democrats see more evidence of Trump obstruction
By John Bresnahan, Sarah Ferris & Melanie Zanona