The Kremlin said there are reasons to be optimistic about a settlement to the conflict but that more work needs to be done.

Russia struck a sedate tone on Friday but acknowledged grounds for cautious optimism, after only backing the "idea" of a U.S. brokered 30-day ceasefire with firm caveats.

President Donald Trump expressed optimism in a social media post on Friday that Russia and Ukraine could soon reach a ceasefire agreement. “We had very good and productive discussions with President Vladimir Putin of Russia yesterday,