Canada was left out of the trilateral defence and security pact known as AUKUS — and a new report by a respected American think tank says Ottawa must overcome its apparent indifference to the deal or risk being left behind by its allies. The analysis report, published online Tuesday by the Washington-based Center for Strategic and International Studies, was co-authored by Vincent Rigby, a former national security and intelligence adviser to Prime Minister Justin Trudeau. The report pulled no punches. "The glacial pace at which Canada appears to be adapting to the realities of modern great power competition has left...