US nuclear arsenal controlled by 1970s computers with 8in floppy disks

Government Accountability Office report details 'museum-ready' machines controlling nuclear force messaging system that are 'obsolete'

The US military's nuclear arsenal is controlled by computers built in the 1970s that still use 8in floppy disks.

A report into the state of the US government, released by congressional investigators, has revealed that the country is spending around $60bn (40.8bn) to maintain museum-ready computers, which many do not even know how to operate any more, as their creators retire.