A Russian delegate to talks with Ukraine said "there has been substantial progress since the Russia-Ukraine talks began," TASS reported on Sunday. 

The report cited Russian negotiator Leonid Slutsky, who said talks with Ukraine may soon produce draft agreements. "It may be possible to reach a joint position between the two delegations soon." 

Ukrainian negotiator and presidential adviser Mykhailo Podolyak on Sunday said he thought progress could be made at talks with Russia in the coming days as the Russian side had become more constructive, according to Reuters.