Dunkin' returns to Canada after Tim Hortons dominance

U.S. café chain Dunkin' is brewing up a comeback in Canada after decades away, with new locations opening in Toronto and Montreal. Experts say the American brand will have a hard time luring Canadians away from the Tim Hortons menu they've come to know so well. As Dunkin' attempts its return, observers note that breaking Tim Hortons' deep cultural grip on Canadian coffee culture will be a significant challenge for the brand.