Every tonne of CO2 reduction will make a difference. If we're asking whether Canada's overall emissions profile in the global context matters, we are the top emitter per capita in the G20. We are one of the world's top 10 economies. The best thing we can do, if we would like to get other nations on board with this sort of action, is to design and implement a world-leading carbon pricing system and produce the clean technologies that we need not only to reduce our own emissions and grow our economy but also to export those technologies abroad and help the rest of the world meet its emissions goals as well.
On January 30th, 2019. See this statement in context.