Negotiations with Russia will be difficult, but will continue, said Adviser to the Head of the Office of President of Ukraine Mikhail Podolyak, APA reports.
"Russia's position in the talks is tough, but Ukraine's position is also tough," he said.
Podolyak added that the talks were smooth for Ukraine due to the known demands of the Russian side.
He also noted that Western countries support Ukraine's position in the negotiation process.