Canada says it has come under economic attack from the US

The Canadian prime minister, Mark Carney, has said the trade war with the United States isn't Canada's choice, but his country is ready to retaliate. Talks between the neighbours collapsed late on Friday, with each accusing the other of seeking last-minute changes to a proposed trade deal. Also, the editor-in-chief of the US military newspaper, Stars and Stripes, raises concerns over censorship…