Secretary of State Marco Rubio traveled to Switzerland for meetings with Ukrainian and European officials on Sunday as U.S. efforts to coordinate a Ukraine peace plan were clouded by concerns over the origins of the proposal from both U.S. lawmakers, along with European allies. NBC News’ Molly Hunter reports.

source https://www.nbcnews.com/video/u-s-lawmakers-allies-voice-concern-over-trump-s-ukraine-peace-proposal-252794949777