Ukrainian presidential adviser Mykhailo Podolyak said in televised remarks that consultations were "ongoing" on a potential roadmap to peace, but added that a sticking point remains the number of countries that would act as security guarantors for Ukraine.
"Consultations on what legal obligations need to be made, how it will be in terms of a multilateral treaty are ongoing now," he said in televised remarks.
Podolyak added: "We have to understand that the Russians categorically do not want to increase the number of countries that can be guarantors of security. It is important for us to have as many of those countries as possible."
Some background: At a recent meeting in Istanbul between Ukrainian and Russian teams, negotiators hammered out very preliminary agreements about the possibility of neutral status for Ukraine, but protected by international security guarantees.
Russian President Vladimir Putin earlier this week described that negotiating process as being at a "dead end," but Podolyak said work has continued.