Gen. James Mattis has an almost mythical stature in cotemporary American military and political culture, Matthew Fisher says.

The fight against the so-called Islamic State must be waged on multiple fronts, agreed a panel of experts that gathered in Halifax for a major international security conference - but perhaps the most important counter-offensive needs to happen in Cyberspace.

High-ranking officials from some 20 countries were in Quebec City Thursday to discuss various aspects of the fight against Islamic State militants.