An interesting story about the difficulties of sanction enforcement.

TSMC is being slowly drawn into sanctions enforcement in order to continue to receive US economic subsidies for their fabs.

Taiwan also realizes that US military aid may become conditional.

Singapore is host to a large microelectronics industry. They have *some*  incentive to enforce sanctions. But there’s an equilibrium they will strike between “convenient to enforce to show that they’re trying and being a good partner” and “not piss off china and not expend too many resources.”