US threatens again that it will withdraw as mediator if Russia, Ukraine fail to propose peace plan

U.S. Secretary of State Marco Rubio said on Tuesday that now is the time for concrete proposals from Moscow and Kyiv to end the war in Ukraine and warned that the U.S. will step back as a mediator if there is no progress.

At a later United Nations Security Council meeting, U.S. diplomat John Kelley blamed Russia for the continuing bloodshed, saying it had “regrettably” carried out high-profile strikes “causing