The explosion, at the demonstration marking the one-year anniversary of the ouster of President Viktor Yanukovych, occurred in the eastern city of Kharkiv.
The prime minister's remarks follow the disappearance this week of three British girls who are believed to have flown to Turkey with the intent of joining the self-declared Islamic State.
The Russian band Pussy Riot is well known for protesting the Russian government. Now the group has released its first song in English. NPR's Scott Simon talks to band member Nadya Tolokonnikova.
Eurozone finance ministers agreed to give Greece a four-month extension of credit today as long as the Greek government sticks to reforms and keeps its finances in check.
State Department spokesperson Jen Psaki has just been promoted to White House Communications Director, a job with a lower public profile. It's going to be a loss for the Kremlin's idea of TV comedy.
President Viktor Poroshenko, speaking on the one-year anniversary of a bloody day of protests leading up to his predecessor's ouster, accuses the Kremlin of organizing snipers who killed dozens.
Athens gets an extension of four months on the terms of the EU bailout, ending for the short-term the danger that it will default and be forced out of the Eurozone.
Audie Cornish talks to Robert Orttung of the Institute for European, Russian and Eurasian Studies at George Washington University for a step back from the day-to-day fighting in Ukraine.