"We have lost time. The ceasefire has become more fragile … I think it is necessary that we now give new momentum to overcoming the obstacles between Kyiv and Moscow," Steinmeier told German newspaper Die Welt am Sonntag on Sunday, POLITICO wrote.

Steinmeier has invited foreign ministers to meet in Berlin on May 11 to discuss the preparation of local elections in eastern Ukraine. The German minister said "concrete proposals [are] now on the table" that include "interesting restabilization proposals."

As UNIAN reported earlier, Special Representative of the OSCE Chairperson-in-Office in Ukraine and in the Trilateral Contact Group on the implementation of the peace plan in the east of Ukraine Martin Sajdik announced that no agreement to free prisoners of war before Orthodox Easter were reached during the recent round of the Minsk peace talks on Donbas on Friday.

Read alsoOSCE envoy Sajdik: No new deal on Donbas captives swap before Orthodox EasterHowever, the Trilateral Contact Group's humanitarian subgroup agreed upon the opening of a checkpoint in Stanytsia Luhanska on April 30. The OSCE Special Monitoring Mission will also coordinate work on a checkpoint in the village of Zolote, he said.