This was stated by President of Ukraine Petro Poroshenko during a press conference, Censor.NET reports.
"As a president, I am the guarantor of the territorial integrity of Ukraine. Questions about detaching the Donbas are a provocation. I will never allow a referendum on the detachment of the Donbas from Ukraine," Poroshenko said.
He added that a national referendum on the status of the Donbas as part of the country can be held.
"I emphasize that I do not rule out holding a referendum in which the citizens of Ukraine will be able to say how they see the future of the Donbas as a part of Ukraine," he said.