Spy mystery: Use of poison 'part of Russian history'

Professor of History and International Relations at Boston University Igor Lukes discusses how the use of poison is "woven into the fabric of Russian history." Subscribe to CTV News to watch more videos:    / ctvnews   Connect with CTV News: For the latest news visit: http://www.ctvnews.ca/ For a full video offering visit the CTV News Network: http://www.ctvnews.ca/video CTV News on Facebook:   / ctvnews   CTV News on Twitter:   / ctvnews   Watch CTV News on Twitter:   / watchctvnews   CTV News on Google+: https://plus.google.com/+CTVNews/posts CTV News on Instagram:   / ctvnews   CTV News on Pinterest:   / ctvnews   --- CTV News is Canada's most-watched news organization both locally and nationally, and has a network of national, international, and local news operations.