On Wednesday, Ukrainian President Petro Poroshenko asked that U.N. peacekeepers be deployed in east Ukraine. But on Thursday, Russia's U.N. ambassador, Vitaly Churkin, said that calling in peacekeepers would violate the country's peace deal with pro-Moscow rebels. Both sides agreed to a cease-fire last week, though fighting has continued in some areas.
"If some other schemes are proposed, it raises the question of whether the Minsk agreements are going to be adhered to or not," Churkin told Russia's state-owned RIA Novosti news agency.
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