Ukraine has publicly agreed to a 30-day ceasefire but Putin has only said Russia will work with Ukraine to craft a "memorandum" on a "possible future peace" - a move described by Kyiv and its European allies as delaying tactics so Russian troops could seize more Ukrainian territory.

Ukraine’s foreign minister on Friday accused Russia of stalling peace negotiations, saying that Moscow had yet to share a promised memorandum outlining its peace terms. He said Kyiv wanted to see that document before sending a delegation to a new round of talks Moscow has proposed for Monday in Istanbul.