Kuala Lampur, Oct. 21 -- Donald Trump appears to believe a good neighbour is someone who buys your products, applauds your threats and occasionally checks whether you would like their country gift-wrapped. Canada has declined the packaging. This has complicated things.

A country whose international personality was somewhere between a courteous librarian and an expensive outdoor jacket has discovered that politeness does not require becoming somebody's annex. Canadians have turned away from American bourbon and holidays. Flags have appeared. Indignation has become a national resource.

Unfortunately, outrage is a terrible export. Everybody already produces their own.

Mark Carney's more useful response is to make Canada harder to bully. A...