Alexander Gabuev, on the interaction of sanctions and tariffs: "If there are 125 per cent tariffs, they can just tell the US to screw themselves and do whatever they want with Russia" - and even if that doesn't happen at the government level, businesses which are no longer able to sell to the US have far less incentive to stay off the US naughty list
https://www.ft.com/content/9e5366af-ee4a-4771-9138-6ac17b6a06ff
(if you searched archive dot ph for that url you might see an illicit unpaywalled copy, so definitely don't do that)