The US on Tuesday agreed to resume weapons supplies and intelligence sharing after Kyiv said at talks in Saudi Arabia that it was ready to support a ceasefire proposal.

The Kremlin said it was carefully studying the results of that meeting and awaited details from Rubio and White House National Security Adviser Mike Waltz. Later on Wednesday, the White House said Waltz had spoken with his Russian counterpart.

In Washington, President Donald Trump told reporters at the White House that he had received "positive messages" about the potential for a truce in the three-year-old conflict, without giving details.