A new meeting is expected next week in London, and Rubio suggested that could be decisive in determining whether the Trump administration continues its involvement.

The Trump administration made clear it will abandon peace attempts for Ukraine if Russia fails to adhere to any terms, but the president did not say whether there would be consequences.

President Donald Trump said Friday that the United States could walk away from the negotiating table to end the Russia-Ukraine war, echoing warnings from Secretary of State Marco Rubio. In a press conference from the Oval Office,