Police search the area near a destroyed billboard reading "Crimea is Ukraine!" following an explosion in Odessa on June 12. Alexey Kravtsov/AFP/Getty Images hide caption

toggle caption Alexey Kravtsov/AFP/Getty Images

Who's Behind A String Of Bombings In Ukraine's Black Sea 'Pearl'?

  • Download
  • <iframe src="https://www.npr.org/player/embed/418905297/419240867" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

A Ukrainian military convoy stops on the road between the towns of Debaltseve and Artemivsk, Ukraine, on Saturday, hours before a cease-fire agreement is set to go into effect. Petr David Josek/AP hide caption

toggle caption Petr David Josek/AP

Ukrainian President Petro Poroshenko, left, German Chancellor Angela Merkel and U.S. Vice President Joe Biden, background right, arrive for a meeting in Munich, Germany on Saturday. Matthias Schrader/AP hide caption

toggle caption Matthias Schrader/AP

Ukraine's president Petro Poroshenko speaks at a meeting of the National Security and Defense Council (NSDC) of Ukraine on Sunday. Mykola Lazarenko/ITAR-TASS/Landov hide caption

toggle caption Mykola Lazarenko/ITAR-TASS/Landov

Igor Girkin, a Russian citizen who headed the pro-Russian rebels in eastern Ukraine last year, walks with his bodyguards in the eastern Ukrainian city of Donetsk in July. Alexander Khudoteply/AFP/Getty Images hide caption

toggle caption Alexander Khudoteply/AFP/Getty Images

The Russian Who Claims Credit For Fanning The Flames In Ukraine

  • Download
  • <iframe src="https://www.npr.org/player/embed/372872870/375308973" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

Russian President Vladimir Putin speaks in front of the map of the Russian Federation, with Crimea on the left of the map, during his annual news conference in Moscow, Russia, on Thursday. The Kremlin has responded angrily to the latest round of U.S.-EU sanctions over the annexation of Crimea. Alexei Druzhinin/AP hide caption

toggle caption Alexei Druzhinin/AP

A pro-Russian rebel fighter guards an area of the Malaysia Airlines Flight 17 crash site in the village of Hrabove, Donetsk region, eastern Ukraine, earlier this week. Investigators erect a "no trespassing" sign in the background. Mstyslav Chernov/AP hide caption

toggle caption Mstyslav Chernov/AP

Russian President Vladimir Putin looks to his side during the family photo session of the G-20 summit in Brisbane, Australia, on Saturday. Putin was sternly criticized by Western leaders over Moscow's involvement in eastern Ukraine. Rob Griffith/AP hide caption

toggle caption Rob Griffith/AP