23:32World Business ReportFirst broadcast 2017/04/27 22:32 GMT: Trade Tensions Escalate Between US and CanadaBBC World Service Duration: 27 minutes Thu 27th Apr 2017, 23:32 on BBC World Service OnlineAvailable for over a yearListen nowPresident Trump has pledged to renegotiate, not scrap, the NAFTA trade deal. Show more GenresFactualMoneyFormatsBulletinsBrandWorld Business Report Source: BBC Online