MOSCOW, December 17. /TASS/. Russian President Vladimir Putin, German Chancellor Angela Merkel, French President Francois Hollande and Ukrainian President Petro Poroshenko in talks by telephone noted it was necessary to ensure a stable ceasefire in Donbass, the Kremlin press service said on Wednesday.

Discussion of the crisis situation in Ukraine continued. The four leaders underscored the necessity to ensure a stable ceasefire in Donbass, the press service said.

They noted it was important to hold a meeting of the Contact Group as soon as possible for the implementation of the Minsk agreements and establish a dialogue between Kiev and the southeast. Among priorities are exchange of captives and withdrawal of heavy weapons from the confrontation line, they said.

The four leaders also discussed economic restoration of the eastern regions and humanitarian and social support for the population.

They agreed to continue telephone contacts in the “Norman format”, the Kremlin press service said.

Crisis in eastern Ukraine

According to the United Nations, more than 4,000 people have been killed and hundreds of thousands have fled Ukraine’s east as a result of clashes between Ukrainian troops and local militias in the Donetsk and Luhansk regions during Kiev’s military operation, conducted since mid-April, to regain control over the breakaway territories, which call themselves the Donetsk and Lugansk People’s republics.