Matthew Holmes: Things have changed. We need leverage and we need options Like it or not, Canada must be willing to adapt and to trade a little less in our values while we derive more value from the strategic trade-offs we’ll need to make. As Prime Minister Mark Carney underscored last week in Davos, the world of trade and international relations has radically changed over the past few months and with two-thirds of our economy tied to import and export trade, Canada cannot afford to tread water.