Do Sanctions Work?

As far as I see it, if a country is truly desperate to get some foreign good, it will. We see this with GPUs in China, despite there being very restrictive sanctions against China receiving American-produced GPUs, China, nonetheless, acquires American-produced GPUs. It's an endless game of whack-a-mole to get sanctions to completely work, and when they do, you've probably crippled your domestic markets.