Russia, Ukraine, Germany and France are set to meet in Belarus' capital Minsk on Wednesday to discuss a peace plan to end the fighting in east Ukraine, a report said.
The move came after German Chancellor Angela Merkel, French President Francois Hollande, Ukrainian President Petro Poroshenko and Russian President Vladimir Putin held an "extensive" talk on phone to discuss a new peace plan chalked by France and Germany, reported the BBC.
Merkel and Hollande have been leading efforts to forge a new truce deal. The details of the plan are now known but it is said to include a demilitarised zone of 50-70km around the current front line.
Russian Foreign Minister Sergei Lavrov said that he expected the meeting in Minsk to yield "important decisions."
Meanwhile, Putin said that the meeting will take place only "if by that time we manage to agree on a number of points."
Nearly 5,300 people have been killed by fighting between Ukrainian forces and pro-Russia rebels since April 2014.
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The West has accused Moscow of sending military support to pro-Russia separatists, a claim that has been denied by Russia.
The truce deal signed in Minsk last September failed to end the clashes as fighting intensified between rebels and the government troops.