If the government wanted to sanction oligarchs who are connected to the Putin regime, to make sure that they're not able to flee from their culpability and do business in Canada in a way that is ultimately serving the Russian war machine—for lack of a better term—it would be almost impossible. This is because of their ability to hide under layers of ownership so that you can't identify, necessarily, what assets are owned by these oligarchs.
On May 16th, 2022. See this statement in context.