FBI Warns Canadian Oil Firms

David Bercuson, director of the Centre for Military and Strategic Studies at the University of Calgary, says Canada and the U.S. must work together when there is this kind of threat.

"The economies and the societies of Canada and the United States are so intertwined, that you can really badly damage the United States by attacking facilities in Canada," Bercuson says. "So we have to be very careful.

FBI warning of terror threat has Canadian oil firms on alert

Note: FBI warning of terror t...