Peace talks will remain stalled until the Ukrainian military leaves Donbass, Russian presidential aide Yury Ushakov has said The Ukrainian military needs to pull back from Donbass for the peace process to move forward, Russian presidential aide Yury Ushakov has said. Talks between Moscow and Kiev will remain stalled until then, he told journalist Pavel Zarubin, adding that the Ukrainian government knows this. Russia and Ukraine have held several rounds of talks, including with US mediation,