01:06Business MattersTrade Tensions Escalate Between US and CanadaBBC World Service Duration: 50 minutes Fri 28th Apr 2017, 01:06 on BBC World Service AustralasiaAvailable for over a yearListen nowPresident Trump has pledged to renegotiate, not scrap, the NAFTA trade deal. Show more GenresNewsFormatsDiscussion & TalkBrandBusiness Matters Source: BBC Online