The Kremlin has welcomed the fact Ukraine has set out its demands for an end to the conflict in written form, but said there was no sign of a breakthrough yet.
Kremlin spokesman Dmitry Peskov told reporters that Russia had not noticed anything really promising or which looked like a breakthrough, adding there was a long period of work ahead.
Ukraine presented its demands when negotiators from the two sides met in Turkey on Tuesday before adjourning to consult with their capitals.
Russia sent tens of thousands of troops into Ukraine on February 24th in what it called a 'special operation' to degrade its southern neighbour's military capabilities and root out people it says are dangerous nationalists.
Ukrainian forces have mounted stiff resistance and so far prevented Russia seizing any major city.
The Ukrainian negotiators said in Istanbul that they had proposed that Ukraine adopt neutral status in exchange for security guarantees, meaning that it would not join military alliances or host military bases for other countries.
The proposals, to come into force only in the event of a complete ceasefire, also included a 15-year consultation period on the status of the Crimean peninsula, which Moscow seized from Ukraine and annexed in 2014.
Peskov said the chief Russian negotiator in the peace talks would provide an update later on Wednesday - but that Crimea was part of Russia, and the Russian constitution precluded discussing the fate of any Russian region with anyone else.
He also said Russia wanted the substance of what was being discussed in the negotiations to remain private.
Russia said in Istanbul that it would sharply scale back military activity around Kyiv and the northern Ukrainian city of Chernihiv as a sign of goodwill.
