Volodymyr Zelensky, Vladimir Putin, Emmanuel Macron and Angela Merkel meet in Paris for Ukraine peace talks. It is the first time Putin and Zelensky meet and the first such four-way leaders' meeting since 2016.
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"."
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.
Volodymyr Zelensky wins the first round of Ukraine's presidential election with 30 percent of the vote, with President Petro Poroshenko coming in second with 15 percent of the vote. Since no candidate reached the required number of votes to achieve the office of the presidency, a runoff election between the two candidates will be held on April 21. Voter turnout was 63 percent.
At the Munich Security Conference, a truce between Russian-backed separatists and the Ukrainian army, per the Minsk Protocol, takes effect Monday. Pending a permanent political agreement, Russian President Vladimir Putin orders that civil registration documents issued in separatist-held areas of Donetsk and Luhansk in eastern Ukraine be temporarily recognized. Ukrainian authorities say this violates provisions in the Minsk agreement. This is the third such agreement because the previous two in 2014 and 2015 were violated. Low-level fighting and artillery fire never fully stopped.