Canada's former ambassador to the UN Bob Rae tells Power & Politics that Canada has a diplomatic role to play with allies to prevent a wider regional war — and that regime change can't happen 'by bombing alone.' This show is also available on Spotify, Apple Podcasts, or your favourite podcast app: https://link.mgln.ai/A2q4qn »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News on