Russia does not rule out possibility of CSTO troops entering Ukraine

As reported by Censor.NET with reference to Interfax.
"It cannot be ruled out that peacekeepers from the CSTO countries and the liberated territories of Ukraine, the Donetsk and Luhansk People's Republics will be needed," he said.
"We are unlikely to agree that some NATO countries will try to get there under the guise of peacekeepers," Kartapolov added.