Re: “Advanced technologies” aren’t always needed
An important reason for large transistor nodes are high energy particles, and that problem tends to get bigger the higher-up in the atmosphere the chip is, and the longer it has to last. So, typically military applications. Therefore, the US – tentative – embargo on small nodes for China won't have any effect on military capability. It's probably designed to keep the 5-eyes advantage in spying on everybody in the world.
Biting the hand that feeds IT
