Pro-Russia protesters disrupted a public meeting with German Chancellor Angela Merkel in Berlin, calling for the arrest of "Nazis" in Ukraine.
Around a hundred protesters, wearing caps emblazoned with the Russian two-headed eagle emblem, booed the chancellor and brandished placards bearing slogans such as "Arrest the Nazis in Ukraine" and "No war against Russia".
Their protest was held behind barriers at the back of the meeting, attended by some 200 people, which was organised by Merkel's Christian Democratic Union (CDU) ahead of this month's EU elections.
Joachim Zeller, a member of the European parliament who was among the speakers, said the protest would have been better held in Moscow's Red Square.
Ukraine's embattled leaders vowed yesterday they would not bow to "blackmail" by pro-Russian rebels waging an insurgency in the east.
The EU on Monday ramped up its sanctions against Moscow over the crisis.
