A gunman carrying explosives takes 16 people hostage aboard a public bus in Lutsk, Ukraine. Police said they identified the man, who had expressed frustrations with the Ukrainian system on social media. All the hostages are freed unharmed following the gunman's surrender to police after hours of negotiations, shortly before the President Volodymyr Zelensky gave into one of the gunman's demands and posted a video on Facebook saying, "Everyone should watch the 2005 film "Earthlings"."
Ukrainian Prime Minister Oleksiy Honcharuk submits his resignation after an audio clip of him allegedly criticizing President Volodymyr Zelensky’s economic policies was leaked earlier this week. Zelensky subsequently announces that Honcharuk is allowed to keep his position.
Acting U.S. Ambassador to Ukraine William B. Taylor Jr. testifies before Congress that he had been told President Donald Trump would, to help his reelection chances, withhold military aid to Ukraine until that country publicly declared investigations would be launched into Burisma Holdings, a company that hired former Vice President Joe Biden's son Hunter, as well as Ukraine's alleged involvement in the 2016 U.S. presidential election.
A whistleblower who filed a complaint against U.S. President Donald Trump over a phone conversation with Ukrainian President Volodymyr Zelensky sought guidance from the House Permanent Select Committee on Intelligence prior to the filing, Representative Adam Schiff's office says, but denies seeing the complaint in advance.
Kurt Volker, United States special envoy to Ukraine, resigns one day after the release of a whistleblower report concerning a phone call between U.S. President Donald Trump and Ukraine President Volodymyr Zelensky.