US is not an impartial mediator in Russia-Ukraine war: Rubio

US Secretary of State Marco Rubio said that US is not an impartial mediator in the Russia-Ukraine war. "To be frank...we only provide weapons to Ukraine...we only impose sanctions on Russia, so we have clearly taken a side," he said. "[Russia-Ukraine war] is a source of frustration for the world; hopefully, this year will bring better news," he added.