Kyiv is working with allies on security guarantees akin to NATO's mutual protection pledge, Ukraine's president Volodymr Zelensky has said. Officials from Ukraine and allies the U.S., the U.K., France and Germany met in London on Thursday in a week when a peace proposal was produced which outlined an Article 5-like agreement which would be backed by Washington.

The Ukrainian president said the meeting could prove historic if it delivers the kind of peace he is hoping for.

President Donald Trump is calling for Ukraine and Russia to meet for “very high level talks,” saying they are “very close to a deal” after productive meetings.