You might want to rephrase that as a thermonuclear warhead is obviously a bomb making it “useful in a bomb.” Also, you can use 60% enriched uranium in the prim

You might want to rephrase that as a thermonuclear warhead is obviously a bomb making it “useful in a bomb.” Also, you can use 60% enriched uranium in the primary stage at the cost of a much larger, less efficient, and dirty device.