Ukraine remains an advocate of deploying a UN peacekeeping mission in Donbas, Presidential Administration Deputy Head Konstantin Yeliseyev has said.

"Since the proposal to send in an armed mission from the Organization for Security and Cooperation in Europe (OSCE) has stalled, we hope that perhaps debate will be resumed on the previous initiative of deploying a UN peacekeeping mission to Donbas," he said.

Yeliseyev said the option should be examined and that it would also "be a test for the Russian Federation, if it, in fact, as it declares, seeks to respect the sovereignty and territorial integrity of Ukraine."

"If Russia vetoes the decision [at the UN Security Council], it will be an indication of [Russia's] actual position on the situation in Donbas," he said.