Trade doesn't work according to common sense, it works according to what's possible. If something's complicated and profitable, trade lets those who understand

Trade doesn't work according to common sense, it works according to what's possible. If something's complicated and profitable, trade lets those who understand it profit by it. Sanctions hurt people on both sides. For example, is a company in California has phones made by a contract manufacturer in China, imports them, and reexports them all over the world at steep prices, who's hurt most if the volume of that trade is limited?