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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
Behind the Whistle-Blower Case, a Long-Held Trump Grudge Toward Ukraine (Published 2019)
By Kenneth P. Vogel
Trump Pressed Ukraine's Leader on Inquiry Into Biden's Son (Published 2019)
By Kenneth P. Vogel, Maggie Haberman & Julian E. Barnes
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