An adviser to Iran’s supreme leader warned that 'any interventionist hand that gets too close to the security of Iran will be cut.' At least seven people have been killed so far by violence in connection with the demonstrations, sparked in part by the collapse of Iran's rial currency. »»» 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