We should try and do as much as we can to strengthen the regime of sanctions to interdict illegal material. More broadly, I think we need to recognize that it's ultimately going to be imperfect. Because of that, I think we need to spend at least as much time focusing on our own domestic production as worrying about what we can or can't do to limit what the Russians can do.
I think, if I were a Russian right now, I'd be pretty happy with what they've been able to produce, but equally, if not more pleased with how limited our collective ability in the west has been to ramp up what we can do in response.