You might want to go look at the laws that were passed in the wake of WWII. The US could trivially nationalize Anthopic if they want to play games with a weapons technology.
Forcing those people to make weapons to be used against citizens is nothing like the total war in WW2. Why wouldn’t the pentagon just buy from another LLM supplier?
Now, if you said "the Deepseek" guys, that would be different.