John McDonnell: Boris Johnson has 'embarrassed' Britain over Russia sanctions

Boris Johnson has embarrassed Britain on the world stage over his mishandling of possible sanctions against Russia, John McDonnell has told Sky News.The shadow chancellor claimed the Foreign Secretary's failure to get the G7 summit to back new sanctions had damaged the UK's credibility."The idea of going along to the G7 and threatening to try and put together a coalition around sanctions was never going to succeed," Mr McDonnell said.