Secretary of State Marco Rubio abruptly pulled out of high-stakes Ukraine peace talks in London—just hours after President Volodymyr Zelensky publicly shot down a major pillar of Donald Trump’s reported ceasefire plan.

The decision by Secretary of State Marco Rubio to pull out of the meeting and an objection by Ukraine’s leader to a key U.S. proposal raised questions about the state of the negotiations.

By Elizabeth Piper, John Irish and Daphne Psaledakis LONDON/PARIS (Reuters) - U.S., Ukrainian and European officials held "substantive" meetings on Wednesday to try to get peace talks back on track after the cancellation of U.