Secretary of State Marco Rubio has warned that the President Trump could focus on other priorities if progress on a cease-fire in Ukraine is not made soon.
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.
Despite Europe’s size, economic might and longstanding alliances with Washington, Trump officials have made clear it is not a priority, European officials say.