Canada is not a big player on the international stage. But as a medium-sized power, it has been working with the EU, the U.S. and the U.K. to deliver a series of economic sanctions that have been ratcheting up the pressure on Russia’s economy. But what about helping Ukraine and Ukrainians directly? And where is Justin Trudeau’s red line in terms of what he won’t commit Canada to doing in this war?The Globe and Mail’s Ottawa Bureau Chief Robert Fife explains the various levels of measures that the federal government has enacted since the invasion of Ukraine began and where things might go next.