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Trump pressured Ukraine's President to investigate Biden's son
By Zachary Cohen & David Shortell
Intelligence chief won't turn over whistleblower complaint to House committee
By Ken Dilanian
'Of course I did': Giuliani acknowledges asking Ukraine to investigate Biden
By Kyle Cheney
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Who is Ukranian president Volodymyr Zelensky?
By Siobhán O’Grady
Intelligence Whistle-Blower Law, Explained
By Charlie Savage
Trump: 'Nothing wrong' with Ukraine call sources say is focus of intel complaint
By Katherine Faulders, John Santucci & Alexander Mallin
Trump urged Ukraine president eight times during call to investigate Joe Biden's son, report says
By Dan Mangan
Trump Repeatedly Pressed Ukraine President to Investigate Biden's Son - WSJ
By Alan Cullison, Rebecca Ballhaus & Dustin Volz
Whistleblower timeline: Team Trump contacts and Ukraine
By Kevin Liptak, Paul LeBlanc & Olanma Hazel Mang
Trump Pressed Ukraine's Leader on Inquiry Into Biden's Son (Published 2019)
By Kenneth P. Vogel, Maggie Haberman & Julian E. Barnes
Behind the Whistle-Blower Case, a Long-Held Trump Grudge Toward Ukraine (Published 2019)
By Kenneth P. Vogel
Trump's communications with foreign leader are part of whistleblower complaint that spurred standoff between spy ...
By Ellen Nakashima, Shane Harris & Greg Miller
Whistleblower complaint about President Trump involves Ukraine, according to two people familiar with the matter
By Ellen Nakashima, Greg Miller & Carol D. Leonnig
Trump Whistleblower Saga Threatens to Blow Up 2020 Campaign
By Sam Stein, Sam Brodey & Asawin Suebsaeng