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President Trump and Ukrainian President Volodymyr Zelensky in New York at the United Nations General Assembly. Photo by Saul Loeb/Getty Images.

A timeline of key events in the Trump-Ukraine story

With a cast of colorful characters, fast moving parts and new information coming out every day, it is easy to get lost trying to follow the story about President Donald Trump and Ukraine. PBS NewsHour has laid out a number of key events outlined by officials and in the whistleblower complaint:

2014

Hunter Biden, son of Vice President Joe Biden, joins board of Bursima holdings, a Ukrainian gas company. Later that year, Russia invades Ukraine and later annexes part of the country.

Russian President Vladimir Putin signed a bill in March, 2014 to annex the Crimean peninsula, but Ukraine and most of the international community did not recognize its annexation. Photo by Alexander Aksakov/Getty Images


March 2016

Then Vice President Joe Biden tells the Ukrainian government their loan guarantees would be cut unless they fire the federal prosecutor, Viktor Shokin, who the U.S. claimed was not doing enough to fight corruption. He is ousted on March 29, 2016.

Former Prosecutor General of Ukraine Viktor Shokin. Photo by Sergii Kharchenko/Pacific Press/LightRocket via Getty Images


Nov 6, 2016

Donald Trump is elected president of the United States.


Jan.- Feb. 2018

Trump’s personal lawyer, Rudy Giuliani, meets with Ukraine’s new prosecutor general, Yuriy Lutsenko, in New York and Warsaw.


Feb 15, 2019

The FY2019 federal budget is approved at midnight, containing nearly $400 million in military aid to support Ukraine and NATO efforts to counter Russian forces. Despite assurances from the White House, the funds are not released to Ukraine for months.


April 18

Special Counsel Robert Mueller releases a redacted version of his report into Russian meddling into the 2016 U.S. election.

The Mueller Report on the Investigation into Russian Interference in the 2016 Presidential Election is pictured in New York, New York, U.S., April 18, 2019. Photo by REUTERS/Carlo Allegri

Photo by REUTERS/Carlo Allegri


April 21

Volodymyr Zelensky wins a runoff election in Ukraine.

Ukrainian President Zelensky. Photo by Valentyn Ogirenko/Reuters


May 6

U.S. Ambassador to Ukraine Marie Yovanovitch is removed from her position.

Former U.S. Ambassador to Ukraine, Marie Yovanovitch. Photo by Arkhip Vereshchagin via Getty Images


May 9

The New York Times reports Giuliani is planning to travel to Ukraine to seek help with investigations that would help Trump, including looking to the Bidens. He cancels two days later.


May 13

U.S. Attorney General William Barr announces an investigation into the origins of Russia probe.


June 13

In an interview with ABC, Trump says he would accept political help from a foreign government. The same day, the chairwoman of the Federal Elections Commission issues a statement that doing so would be illegal.


July 19

U.S. special envoy to Ukraine Kurt Volker and Gordon Sondland, the U.S. ambassador to the European Union, exchange texts about Sondland’s briefing of Zelenky before a scheduled call with Trump.


July 24

Robert Muller testifies before Congress about his findings.

Former Special Counsel Robert Mueller testifies before the House Judiciary Committee, July 24, 2019. Photo by Jonathan Ernst/Reuters


July 25

In a phone call, Ukraine’s Zelensky asks Trump for Javelin missiles to use in Ukraine’s conflict with Russia. Trump then asks Zelensky to “do us a favor.” Focused on a disproven conspiracy theory, Trump asks Zelensky to investigate Crowdstrike, a cybersecurity company that played a role in uncovering Russia’s efforts to influence the 2016 election. After discussing his concerns about fighting corruption, Trump brings up Hunter Biden and says that he believes Vice President Joe Biden “stopped the prosecution and a lot of people.” He asks Zelensky to get in touch with Attorney General Richard Barr and Giuliani. Trump also invites Zelensky to Washington.

Someone in the White House puts notes of the call between Zelensky and Trump into an extra secure system usually reserved for issues of national security.


Aug 12

A whistleblower complaint is filed to the Inspector General for the Intelligence Community, Michael Atkinson.


Sept 1

Zelensky meets with Vice President Mike Pence in Poland after Trump stays back to monitor Hurricane Dorian.


Sept 9

Sondland exchanges texts with U.S. Charge d’Affaires for Ukraine, Bill Taylor, about the Ukraine aid.


Sept 11

Aid to Ukraine, which had been on hold since mid-July on order of the White House, is released.


Sept 13

Rep Adam Schiff, D-CA, chairman of the House Intelligence Committee subpoenas the acting Director of National Intelligence Joseph Maguire to produce a whistleblower complaint that the ICIG had determined was of “urgent concern.”


Sept 24

Following media reports that the whistleblower complaint was regarding Trump pushing Ukraine to investigate the Bidens, House Speaker Nancy Pelosi announces an impeachment inquiry.


Sept 25

The White House releases a memo of the call between Zelensky and Trump.


Sept 26

The House intelligence committee releases a redacted copy of the whistleblower complaint. Maguire testifies before the committee the same day. Volker, who is named in the complaint, resigns the next day.


Oct 3

Volker testifies in a closed-door session and releases text messages between him and various diplomats to the House. The same day, President Trump says publicly that China and Ukraine should investigate the Bidens.


This is a developing story.

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