I met an drunk ex navy guy at a bar about 15 years ago. He talked about how certain USA allies wouldn’t allow ships carrying nuclear weapons to dock in their p

I met an drunk ex navy guy at a bar about 15 years ago. He talked about how certain USA allies wouldn’t allow ships carrying nuclear weapons to dock in their ports. He said however their was no restriction on carrying the parts necessary to assemble nuclear weapons. So maybe they take out a screw on all of the warheads before sailing into port.