International trade lawyer Mark Warner says trade negotiations may not be affected because of the closure of the Strait of Hormuz due to the U.S.-Israel war against Iran, but issues could arise if allies like Canada refuse to help escort ships through the strait should the U.S. ask. »»» 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 TikTok: https://www.tiktok.com/@cbcnews